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	<title>Science For Health Care &#187; Cancer</title>
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	<link>http://www.science4healthcare.com</link>
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		<title>Liver Cancer Treatment</title>
		<link>http://www.science4healthcare.com/2009/09/09/liver-cancer-treatment/</link>
		<comments>http://www.science4healthcare.com/2009/09/09/liver-cancer-treatment/#comments</comments>
		<pubDate>Wed, 09 Sep 2009 16:09:41 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[cancer cells]]></category>
		<category><![CDATA[liver cancer treatment]]></category>
		<category><![CDATA[radiation]]></category>
		<category><![CDATA[therapy]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=97</guid>
		<description><![CDATA[After liver cancer is found and staged, your doctor will recommend one or more treatment options. Choosing a treatment plan is a major decision. Take time and think about all of your choices.
When planning your treatment, it is important to take into account is the stage (extent) of the cancer. But you and your cancer [...]]]></description>
			<content:encoded><![CDATA[<p>After liver cancer is found and staged, your doctor will recommend one or more treatment options. Choosing a treatment plan is a major decision. Take time and think about all of your choices.</p>
<p>When planning your treatment, it is important to take into account is the stage (extent) of the cancer. But you and your cancer care team will also want to think about your age, general state of health, and personal preferences.</p>
<p>It may be a good idea to get a second opinion, especially from a doctor experienced in treating liver cancer. A second opinion can give you more information and help you feel more confident about the treatment plan that you pick. Some insurance companies want a second opinion before they will agree to pay for certain treatments. Almost all will pay for the second opinion.</p>
<p><a href="http://www.science4healthcare.com/wp-content/uploads/2009/09/liver-cancer-treatment.jpg"><img src="http://www.science4healthcare.com/wp-content/uploads/2009/09/liver-cancer-treatment-300x243.jpg" alt="liver-cancer-treatment" title="liver-cancer-treatment" width="300" height="243" class="aligncenter size-medium wp-image-98" /></a></p>
<p>Surgery</p>
<p>At this time surgery offers the only likely chance to cure liver cancer. Surgery is done either to remove the tumor or do a liver transplant. If all of the cancer that the surgeon can see at the time of the operation can be removed, you have the best outlook for survival. But complete removal of most liver cancers is not possible. Often the cancer is large, is found in many different parts of the liver, or has spread beyond the liver. Also, many people with cirrhosis do not have enough healthy liver left to make surgery an option.</p>
<p><span id="more-97"></span></p>
<p>Risks and side effects of surgery</p>
<p>People with liver cancer often have damage to the other parts of their liver. Surgeons have to remove enough of the liver to try to get all of the cancer, yet leave enough behind for the liver to work the way it needs to.</p>
<p>Bleeding after surgery is a major concern. On top of this, the liver normally makes substances that help the blood clot. Damage to the liver (both before the surgery and during the surgery itself) can add to possible bleeding problems. Another concern is that because the remaining liver still contains the disease damage that led to the cancer, sometimes a new liver cancer can develop later.</p>
<p>Liver transplant</p>
<p>A liver transplant is an option for people with small liver cancers. For now, transplant is saved for those with a few small tumors that cannot be totally removed, either because of the location of the tumors or because not enough normal liver remains.</p>
<p>Not many livers are available for patients with cancer because they are most often used for more curable diseases. Patients often must wait a long time, often too long, for a liver to be found. For this reason, some doctors suggest a limited resection first and then a transplant if the cancer comes back.</p>
<p>Increased awareness about organ donation is a crucial public health goal that could make this treatment available to more patients with liver cancer and other serious liver diseases.</p>
<p>Another option that has been used in recent years is having a living donor give a part of their liver for transplant to a close relative. This can work, but it carries risk for the donor. About 300 living donor transplants are done in the United States each year. Only a small percent are for people with liver cancer.</p>
<p>Possible risks and side effects of a liver transplant</p>
<p>People who get a liver transplant have to be given drugs to help suppress the immune system and prevent the body from rejecting the new organ. These drugs have their own risks and side effects, especially the risk of getting serious infections. Some of the drugs used to prevent rejection can also cause other health problems. Future medical advances are expected to reduce the risk of rejection and the harsh side effects.</p>
<p>Tumor ablation and embolization</p>
<p>Ablation refers to a local treatment that destroys the tumor without removing it. There are a number of different ways to do this. These treatments are usually used for patients with only a few small tumors that cannot be taken out with surgery. They are not meant to cure the cancer but can allow people to live longer.</p>
<p>Embolization is another treatment for tumors that cannot be removed. A material is put in the artery that carries blood to the tumor. This blocks the blood flow and makes it harder for the tumor to grow.</p>
<p>Chemoembolization involves combining embolization with chemotherapy. Studies are now going on to see if this works better than embolization alone.</p>
<p>Radioembolization combines embolization with radiation therapy. It is done by injecting small radioactive beads or oils into the artery that feeds the liver. This allows small amounts of radiation to only get at the tumor sites. These techniques are still fairly new and are discussed in more detail in the section &#8220;What&#8217;s new in liver cancer research?&#8221;</p>
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<p>Radiation treatment</p>
<p>Radiation therapy is treatment that uses high-energy rays (such as x-rays) to kill cancer cells and shrink tumors. External beam radiation delivers radiation from outside the body to the cancer. Liver cancer cells can be killed by radiation, but this treatment can&#8217;t be used at very high doses because normal liver tissue is killed, too. This type of radiation may be used to shrink a liver tumor or to give relief from symptoms like pain, but it does not cure the liver cancer and usually does not help people live longer.</p>
<p>Three-dimensional conformal radiation therapy (3DCRT) is a newer type of external-beam radiation treatment. It uses computers to map the exact location of a tumor. This lowers the damage to normal tissue and allows higher doses to be used. When available, this approach is usually preferred over standard radiation treatment.</p>
<p>Possible side effects of radiation treatment</p>
<p>Side effects of radiation treatment might include sunburn-like skin problems at the place where the radiation enters the body, nausea, vomiting, and tiredness. Often these go away after treatment. Radiation might also make chemo side effects worse.</p>
<p>Targeted therapy</p>
<p>As researchers have learned more about the changes in cells that cause cancer, they have been able develop newer drugs that are aimed at these changes. Targeted drugs do not work the same as standard chemo drugs (which are described in the next section). They often have different, and less severe, side effects.</p>
<p>Like chemo these drugs enter the bloodstream and go throughout the body. This makes them useful against cancers that have spread to distant organs. Because chemo has not worked well in most patients with liver cancer, doctors have begun testing and using targeted therapies.</p>
<p>Chemotherapy</p>
<p>Chemotherapy (often called &#8220;chemo&#8221;) is the use of drugs to kill cancer cells. Usually the drugs are given into a vein or by mouth. Once the drugs get in the blood, they spread throughout the body. This makes them useful for cancer that has spread to distant organs.</p>
<p>Liver cancer does not respond to most chemo drugs. The drugs that have worked best are doxorubicin (Adriamycin®) 5-fluorouracil, and cisplatin. But most studies have not shown that chemo helps liver cancer patients to live longer.</p>
<p>Possible side effects of chemo</p>
<p>Chemo can have side effects like these:</p>
<ul>
<li>mouth sores</li>
<li>loss of appetite</li>
<li>hair loss</li>
<li>nausea and vomiting</li>
<li>a higher chance of infection (from a shortage of white blood cells)</li>
<li>easy bleeding or bruising (from a shortage of blood platelets)</li>
<li>tiredness and shortness of breath (from low red blood cell counts)</li>
</ul>
<p>Most side effects go away once treatment is over. If you have side effects, be sure to tell your doctor or nurse. There are often ways to help.</p>
<p>Liver cancer survival rates</p>
<p>Only a small number of liver cancers are found in the early stages and can be removed with surgery. The 5-year survival rate for patients with resectable early stage cancer is in the range of 30% to 60%. This percentage drops for more advanced cancers or with more severe liver disease.</p>
<p>The 5-year survival rate refers to the percentage of patients who live at least 5 years after their cancer is diagnosed. Five-year rates are used to produce a standard way of discussing prognosis. Of course, some people live much longer than 5 years.</p>
<p>The 5-year survival rate for people with cancer that has spread widely throughout the liver or to distant sites is less than 5%, and the average survival time is often measured in months.</p>
<p>The overall 5-year survival rate from liver cancer is less than 10%. Part of the reason for this low survival rate is that most patients with liver cancer also have other liver problems such as cirrhosis, which itself can be fatal.</p>
<p>Each person is different</p>
<p>While numbers provide an overall picture, keep in mind that every person&#8217;s situation is unique and statistics can&#8217;t predict exactly what will happen in your case. Talk with your cancer care team if you have questions about your personal chances of a cure, or how long you might survive your cancer. They know your situation best</p>
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		</item>
		<item>
		<title>Liver Cancer (Hepatocellular carcinoma)</title>
		<link>http://www.science4healthcare.com/2009/09/09/liver-cancer-hepatocellular-carcinoma/</link>
		<comments>http://www.science4healthcare.com/2009/09/09/liver-cancer-hepatocellular-carcinoma/#comments</comments>
		<pubDate>Wed, 09 Sep 2009 15:56:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[Hepatocellular carcinoma]]></category>
		<category><![CDATA[liver]]></category>
		<category><![CDATA[liver cancer]]></category>
		<category><![CDATA[low weight]]></category>
		<category><![CDATA[pain]]></category>
		<category><![CDATA[yellow skin]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=93</guid>
		<description><![CDATA[Your liver is the largest organ inside your body. It filters harmful substances from the blood, digests fats from food and stores the sugar that your body uses for energy. Primary liver cancer starts in the liver. Metastatic liver cancer starts somewhere else and spreads to your liver.
Risk factors for primary liver cancer include
* Having [...]]]></description>
			<content:encoded><![CDATA[<p>Your liver is the largest organ inside your body. It filters harmful substances from the blood, digests fats from food and stores the sugar that your body uses for energy. Primary liver cancer starts in the liver. Metastatic liver cancer starts somewhere else and spreads to your liver.</p>
<p>Risk factors for primary liver cancer include</p>
<p>* Having hepatitis<br />
* Having cirrhosis, or scarring of liver<br />
* Being male<br />
* Low weight at birth<br />
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</p>
<p>Cancer symptoms can include a lump or pain on the right side of your abdomen and yellowing of the skin. However, you may not have symptoms and the liver cancer may not be found until it is advanced. This makes it harder to treat. Liver cancer treatment options include surgery, radiation, chemotherapy or liver transplantation.</p>
<p><a href="http://www.science4healthcare.com/wp-content/uploads/2009/09/liver-cancer.jpg"><img src="http://www.science4healthcare.com/wp-content/uploads/2009/09/liver-cancer-284x300.jpg" alt="liver-cancer" title="liver-cancer" width="284" height="300" class="aligncenter size-medium wp-image-94" /></a></p>
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		<title>Lung Cancer &amp; Survival Rate With Modern Three-dimensional Radiation Therapy</title>
		<link>http://www.science4healthcare.com/2009/09/09/lung-cancer-survival-rate-with-modern-three-dimensional-radiation-therapy/</link>
		<comments>http://www.science4healthcare.com/2009/09/09/lung-cancer-survival-rate-with-modern-three-dimensional-radiation-therapy/#comments</comments>
		<pubDate>Wed, 09 Sep 2009 15:46:24 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[lung]]></category>
		<category><![CDATA[radiation therapy]]></category>
		<category><![CDATA[survival]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=89</guid>
		<description><![CDATA[Modern three-dimensional radiation therapy has been proven to be more successful at curing lung cancer than older two-dimensional radiation therapy for some patients with early stage lung cancer, according to a new study in the September 1, 2006 edition of the International Journal of Radiation Oncology * Biology * Physics, the official journal of the [...]]]></description>
			<content:encoded><![CDATA[<p>Modern three-dimensional radiation therapy has been proven to be more successful at curing lung cancer than older two-dimensional radiation therapy for some patients with early stage <a href="http://www.science4healthcare.com/2009/08/08/asbestos-lung-cancer/">lung cancer</a>, according to a new study in the September 1, 2006 edition of the International Journal of Radiation Oncology * Biology * Physics, the official journal of the American Society for Therapeutic Radiology and Oncology (ASTRO).</p>
<p><center><a href="http://www.science4healthcare.com/wp-content/uploads/2009/09/lung-cancer.jpg"><img src="http://www.science4healthcare.com/wp-content/uploads/2009/09/lung-cancer-300x300.jpg" alt="lung-cancer" title="lung-cancer" width="300" height="300" class="aligncenter size-medium wp-image-90" /></a></center></p>
<p>Non-small cell lung cancer (NSCLC) accounts for 87 percent of all <a href="http://www.science4healthcare.com/2009/08/08/asbestos-lung-cancer/">lung cancers</a> diagnosed. Currently, the best treatment for stage I NSCLC is surgery or stereotactic radiation therapy (SRT), often followed by chemotherapy if the lesion was larger than 3 cm or radiotherapy and chemotherapy if the surgical margin or hilar or mediastinal nodes were positive at the time of operation. The five-year survival outcomes are very high, with 50 to 67 percent of these patients living at least five years after diagnosis if patients had a well staged stage I NSCLC. When surgery is not an option because the patient has heart problems or other complications, <a href="http://www.science4healthcare.com/2009/08/08/the-science-of-cancer-new-treatment-methods/">treatment options</a> include varying types of radiation therapy and chemotherapy, alone or in combination.</p>
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<p>In this study, doctors at M.D. Anderson Cancer Center in Houston wanted to see if conventional radiation therapy worked as well as the newer three-dimensional conformal radiation therapy (also called 3D-CRT) at curing patients with early stage non-small cell lung cancer. 3D-CRT was created to improve upon older types of radiation therapy by allowing doctors to aim several radiation beams at the tumor to shape or &#8220;conform&#8221; the radiation to the lung. The idea is that tailoring each beam allows doctors to give more radiation to the tumor while keeping it away from nearby healthy tissues.</p>
<p>Between 1978 and 2003, 200 patients with medically inoperable stage I NSCLC were treated with radiation therapy alone. Eighty-five received 3D-CRT while 115 received conventional therapy. Thirty-six percent of patients who received 3D-CRT lived five years after diagnosis compared to 10 percent who received the conventional therapy. Their causes of deaths were more related to intercurrent disease rather than cancer. Local failure was significantly reduced by 3D-CRT compared to conventional RT.</p>
<p>&#8220;This study proves that three-dimensional conformal radiation therapy improves outcomes for patients with medically inoperable stage I non-small cell lung cancer,&#8221; said Ritsuko Komaki, M.D. &#8220;Patients with this type of lung cancer should ask their radiation oncologist about 3D-CRT.&#8221; Dr. Komaki is a radiation oncologist and professor at M.D. Anderson Cancer Center in Houston. </p>
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		<title>Treatment for cervical cancer</title>
		<link>http://www.science4healthcare.com/2009/08/16/treatment-for-cervical-cancer/</link>
		<comments>http://www.science4healthcare.com/2009/08/16/treatment-for-cervical-cancer/#comments</comments>
		<pubDate>Sun, 16 Aug 2009 20:08:50 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[cancer cells]]></category>
		<category><![CDATA[cervical cancer]]></category>
		<category><![CDATA[cervix]]></category>
		<category><![CDATA[treatment]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=86</guid>
		<description><![CDATA[What is the cervix?
The cervix is the name for the lowest part of the uterus. The uterus is an organ that only women have, and it is where a baby grows and develops when a woman is pregnant. During pregnancy, the uterus has an enormous increase in size. When a woman is not pregnant, the [...]]]></description>
			<content:encoded><![CDATA[<p><strong>What is the cervix?</strong></p>
<p>The cervix is the name for the lowest part of the uterus. The uterus is an organ that only women have, and it is where a baby grows and develops when a woman is pregnant. During pregnancy, the uterus has an enormous increase in size. When a woman is not pregnant, the uterus is a small, pear-shaped organ that sits between a woman&#8217;s rectum and her bladder. The cervix connects the uterus with the birth canal (the vagina). The cervix can both be visualized and sampled by your doctor during a routine pelvic examination in his or her office.</p>
<div id="attachment_87" class="wp-caption aligncenter" style="width: 408px"><img src="http://www.science4healthcare.com/wp-content/uploads/2009/08/cervix.jpg" alt="The narrow neck of the uterus is called the cervix. This is where cervical cancer may develop" title="cervix" width="398" height="286" class="size-full wp-image-87" /><p class="wp-caption-text">The narrow neck of the uterus is called the cervix. This is where cervical cancer may develop</p></div>
<p><span id="more-86"></span></p>
<p><strong>What is cervical cancer?</strong></p>
<p>Cervical cancer develops when cells in the cervix begin to grow out of control and can then invade nearby tissues or spread throughout the body. Large collections of cells that grow abnormally are called tumors. Some tumors are not cancer, because they cannot spread or threaten someone&#8217;s life. These are called benign tumors. The tumors that can spread throughout the body or invade nearby tissues are considered cancer and are called malignant tumors. Usually, cervix cancer is very slow growing, although in certain circumstances it can grow and spread quickly.</p>
<p>Cancers are characterized by the cells that they originally form from. The most common type of cervical cancer is called squamous cell carcinoma; it comes from cells that lie on the surface of the cervix known as squamous cells. Squamous cell cervical cancer compromises about 80% of all cervical cancers. The second most common form is adenocarcinoma; it comes from cells that make up glands in the cervix. The percentage of cervical cancers that are adenocarcinomas has risen since the 1970s, although no one knows exactly why. About 3% to 5% of cervical cancers have characteristics of both squamous and adenocarcinomas and are called adenosquamous carcinomas. There are a few other very rare types like small cell and neuroendocrine carcinoma that are so infrequent that they will not be discussed further here.</p>
<p><strong>Cervical cancer symptoms?</strong></p>
<p>Abnormal cervical cell changes rarely cause symptoms. But you may have symptoms if those cell changes grow into cervical cancer. Symptoms of cervical cancer may include:</p>
<p>Bleeding from the vagina that is not normal, or a change in your menstrual cycle that you can&#8217;t explain.<br />
Bleeding when something comes in contact with your cervix, such as during sex or when you put in a diaphragm.<br />
Pain during sex.<br />
Vaginal discharge that is tinged with blood.</p>
<p><strong>Cervical cancer treatment options?</strong></p>
<p>Cervical cancer that is caught early can usually be cured. If the cancer is caught very early, you still may be able to have children after treatment.</p>
<p>The treatment for most stages of cervical cancer removes the cancer and makes you unable to have children. These treatments include:</p>
<p>A <em>hysterectomy</em> and removal of pelvic lymph nodes with or without removal of both ovaries and fallopian tubes. <em>Radiation therapy</em>. <em>Chemotherapy</em>.</p>
<p>On June 15, 2006, the US Food and Drug Administration approved the use of a combination of two chemotherapy drugs, hycamtin and cisplatin for women with late-stage (IVB) cervical cancer treatment. Combination treatment has significant risk of neutropenia, anemia, and thrombocytopenia side effects. Hycamtin is manufactured by GlaxoSmithKline</p>
<p><center><br />
<em>Watch the yellow arrow on this video which points out where a type of white blood cell called a granulocyte is killing cervical cancer cells.</em><br />
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</center></p>
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		<title>Breast Cancer Surgery, Several Cancer Treatment Options</title>
		<link>http://www.science4healthcare.com/2009/08/08/breast-cancer-surgery-several-cancer-treatment-options/</link>
		<comments>http://www.science4healthcare.com/2009/08/08/breast-cancer-surgery-several-cancer-treatment-options/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 22:44:59 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[breast cancer]]></category>
		<category><![CDATA[lumpectomy]]></category>
		<category><![CDATA[mastectomy]]></category>
		<category><![CDATA[surgery]]></category>
		<category><![CDATA[treatment options]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=77</guid>
		<description><![CDATA[Sample 3d medical video of several surgery methods ( Lumpectomy, Mastectomy, Modified Radical Mastectomy ) how to remove breast cancer. 

]]></description>
			<content:encoded><![CDATA[<p>Sample 3d medical video of several surgery methods ( Lumpectomy, Mastectomy, Modified Radical Mastectomy ) how to remove breast cancer. </p>
<p><center><object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/WUoqsBxgXWI&#038;hl=en&#038;fs=1&#038;"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/WUoqsBxgXWI&#038;hl=en&#038;fs=1&#038;" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object></center></p>
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		<title>The Science of Cancer, New Treatment Methods</title>
		<link>http://www.science4healthcare.com/2009/08/08/the-science-of-cancer-new-treatment-methods/</link>
		<comments>http://www.science4healthcare.com/2009/08/08/the-science-of-cancer-new-treatment-methods/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 22:32:46 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[new treatment]]></category>
		<category><![CDATA[science]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=72</guid>
		<description><![CDATA[G. Edward Griffin the famous author of &#8220;World without cancer&#8221; talking about new cancer therapy methods and about the science and politics of cancer. Stories about unapproved but effective cancer treatments.






 











]]></description>
			<content:encoded><![CDATA[<p>G. Edward Griffin the famous author of &#8220;World without cancer&#8221; talking about new cancer therapy methods and about the science and politics of cancer. Stories about unapproved but effective cancer treatments.</p>
<p><center><br />
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/MJ_4YkekV9A&#038;hl=en&#038;fs=1&#038;"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/MJ_4YkekV9A&#038;hl=en&#038;fs=1&#038;" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object></center></p>
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<center><br />
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		<title>Prostate cancer radiation therapy</title>
		<link>http://www.science4healthcare.com/2009/08/08/prostate-cancer-radiation-therapy/</link>
		<comments>http://www.science4healthcare.com/2009/08/08/prostate-cancer-radiation-therapy/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 08:51:37 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=66</guid>
		<description><![CDATA[There are three types of common radiotherapies used as prostate cancer treatments: the conventional electron beam radiation therapy (EBRT), and the newer 3-dimensional conformal radiation therapy (3D-CRT) and intensity modulated radiation (IMRT). Electron beam radiation therapy was the first external radiation therapy used as a prostate cancer treatment. The type of particle used for these [...]]]></description>
			<content:encoded><![CDATA[<p>There are three types of common radiotherapies used as prostate cancer treatments: the conventional electron beam radiation therapy (EBRT), and the newer 3-dimensional conformal radiation therapy (3D-CRT) and intensity modulated radiation (IMRT). Electron beam radiation therapy was the first external radiation therapy used as a prostate cancer treatment. The type of particle used for these three therapies is called photons which have no charge and no significant mass. Photons are the same type of energy used in diagnostic x-rays.</p>
<p>3D-CRT is an advanced form of EBRT, and IMRT is an advanced form of 3D-CRT. Therefore, the way radiation oncologists prepare their patients for the procedure is similar. Patients receiving external radiation therapy usually receive treatments Monday through Friday for 5 to 9 weeks depending on the doctor’s prescription. Radiotherapy usually begins with a CT (computer tomography) scan of the prostate gland and the surrounding organs. The CT scan takes a 3D-picture of the prostate gland and the surrounding organs and a team of radiation physicists and dosimetrists plan a target area for the radiation beam. The target area conforms to the shape of the patient’s prostate gland and, to ensure correct positioning, the patient will have his target area marked with permanent ink. The team will further use alignment lasers to direct the radiation beam. The patient, who is lying on his back, receives therapy from the linear accelerator which moves up, down, and around to hit the target area from different angles.</p>
<p><img class="aligncenter size-full wp-image-67" title="prostate-cancer-radiation-therapy" src="http://www.science4healthcare.com/wp-content/uploads/2009/08/radiotherapy.jpg" alt="prostate-cancer-radiation-therapy" width="468" height="286" /></p>
<p><span id="more-66"></span></p>
<p><strong>3-Dimensional Conformal Radiation Therapy</strong><br />
3-dimensional conformal radiation therapy introduces the use of a body immobilization device. Since positioning is everything for the radiation oncologist, an immobile patient target area is much easier to hit than the target area of a patient who might sneeze or inadvertently change positions. The CT scan is performed on a computer with specialized software that takes detailed cross-sectional pictures of the patient’s internal anatomy. The linear accelerator is then aimed precisely at each of the targeted areas in these pictures. The prostate gland therefore can receive a much stronger dose of radiation while the surrounding organs receive much less.</p>
<p><strong>Intensity Modulated Radiation Beam Therapy</strong><br />
Intensity modulated radiation therapy takes 3D-CRT a step further. The intensity of the beam is modified so that much smaller beams of radiation are delivered from multiple angles at smaller intervals. A patient receives more beams of radiation, but since these beams are thinner, they are capable of hitting the target more precisely while not hitting the healthy tissue. IMRT is currently not as common in the United States as 3D-CRT, but is gaining popularity as a prostate cancer treatment.</p>
<p><strong>Proton Beam Radiation Therapy</strong><br />
The technique of conformal proton beam radiation therapy is similar to that of 3D-conformal radiation therapy. The proton is a subatomic particle, not a wave like the photon. Protons deposit their energy into tissue only as they begin to slow down after being produced by the linear accelerator. A radiation oncologist can therefore determine to which speed to accelerate the protons, resulting in maximum amount of energy being deposited into the prostate tumor. The proton can be aimed with extreme precision and is often used for delicate surgeries such as those involving the eye or spine. Conformal proton beam radiation therapy is the most expensive type of radiotherapy, and is usually used in conjunction with another type of EBRT.</p>
<p><strong>How Radiotherapy Destroys Prostate Cancer</strong><br />
Patients who opt for radiotherapy as their prostate cancer treatment will go 5 times a week for 5 to 9 weeks depending on the doctor’s prescription and the extent of the disease. Radiotherapy can be inconvenient, but exposing the cancerous cells to lowered doses of radiation damages their DNA by creating free radicals. Normal cells are able to quickly repair this damage before dividing, but cancerous cells cannot. Since prostate cancer grows slowly, many weeks of therapy are necessary to continually damage the DNA that a cancerous cell may otherwise have time to repair.</p>
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		<title>Prostate cancer treatment</title>
		<link>http://www.science4healthcare.com/2009/08/08/prostate-cancer-treatment/</link>
		<comments>http://www.science4healthcare.com/2009/08/08/prostate-cancer-treatment/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 08:45:04 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[enlarged prostate]]></category>
		<category><![CDATA[prostate]]></category>
		<category><![CDATA[radiation]]></category>
		<category><![CDATA[symptoms]]></category>
		<category><![CDATA[therapy]]></category>
		<category><![CDATA[treatment]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=63</guid>
		<description><![CDATA[The prostate is a glandular organ present only in males. Only men develop prostate cancer.
The prostate is normally about 3 cm long (slightly more than 1 inch) and lies at the neck of the bladder and in front of the rectum.
The prostate surrounds the urethra, which is a tubular structure that carries sperm and urine [...]]]></description>
			<content:encoded><![CDATA[<p>The prostate is a glandular organ present only in males. Only men develop prostate cancer.</p>
<p>The prostate is normally about 3 cm long (slightly more than 1 inch) and lies at the neck of the bladder and in front of the rectum.</p>
<p>The prostate surrounds the urethra, which is a tubular structure that carries sperm and urine out of the penis.</p>
<p>It produces a thin, milky fluid that is added to the sperm at the time of ejaculation.</p>
<p>Older men often have an enlarged prostate, which is a noncancerous condition called benign prostatic hypertrophy (BPH) that causes urinary symptoms.<br />
Cancer occurs when normal cells undergo a transformation in which they grow and multiply without normal controls.</p>
<p>As the cells multiply, they form a mass called a tumor.</p>
<p>Tumors are cancerous only if they are malignant. This means that they invade neighboring tissues because of their uncontrolled growth.</p>
<p>They may also travel to remote organs via the bloodstream.</p>
<p>This process of invading and spreading to other organs is called metastasis.</p>
<p>Tumors overwhelm surrounding tissues by invading their space and taking the oxygen and nutrients they need to survive and function.<br />
Almost all prostate cancers arise from the secretory glandular cells in the prostate. Cancer arising from a glandular cell is known as adenocarcinoma. Therefore, almost all prostatic cancers are prostatic adenocarcinomas.<br />
In the United States, cancer of the prostate is a common malignant cancer in men, second only to lung cancer. About 200,000 new cases are diagnosed each year, and about 30,000 men die of the disease each year.</p>
<p><center><div id="attachment_64" class="wp-caption alignnone" style="width: 410px"><img class="size-full wp-image-64" title="prostate" src="http://www.science4healthcare.com/wp-content/uploads/2009/08/prostate.jpg" alt="Prostate cancer is a form of cancer that develops in the prostate, a gland in the male reproductive system" width="400" height="261" /><p class="wp-caption-text">Prostate cancer is a form of cancer that develops in the prostate, a gland in the male reproductive system</p></div></center></p>
<p><span id="more-63"></span></p>
<h3 style="font-size: 14px; font-weight: bold;">Prostate Cancer Symptoms</h3>
<p style="font-size: 12px; margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding: 0px;">Most men with prostate cancer have no symptoms. This is particularly true of early prostate cancer.</p>
<ul>
<li>Most prostate cancers are discovered incidentally when a digital rectal exam is performed.</li>
<li>A digital rectal exam is part of a thorough regular health examination. Digital refers to finger.</li>
<li>During the digital rectal exam, the examiner inserts a gloved and lubricated finger in the rectum to feel the prostate for abnormalities.</li>
</ul>
<p>Symptoms usually appear when the tumor causes some degree of urinary blockage at the bladder neck or the urethra.</p>
<ul>
<li>The usual symptoms include difficulty in starting and stopping the urinary stream, increase in frequency of urination, and painwhile urinating.</li>
<li>The urinary stream may be diminished (urinary retention), or it may simply dribble out.</li>
<li>Even after urination, there is a sense of bladder fullness because the bladder has not been fully emptied.</li>
</ul>
<p>Less common symptoms are blood in the urine (hematuria), painful ejaculation, orimpotence (inability to have an erection).</p>
<ul>
<li>These 3 symptoms are uncommon in early stages of the disease. They usually occur when the cancer is advanced.</li>
<li>As the cancer advances to cause a greater blockage, bladder function may deteriorate further.</li>
<li>Men with such advanced cancers sometimes experience recurring urinary tractinfections.</li>
</ul>
<p>Despite these symptoms, many men do not seek medical care until the cancer has spread. Symptoms of metastatic disease include fatigue, malaise, and weight loss. Spread to the bones causes deep bone pain, especially in the hips and back, and bone fractures from weakening of the bone.</p>
<p><strong>Prostate Cancer Treatment Options:</strong></p>
<p>Prostate Seed Implant &#8211; Minimally invasive surgery lasts 1-2 hours with a possible overnight stay; most return to normal activities in a few days.</p>
<p>Salvage Chemotherapy &#8211; Chemotherapy is administered orally, or by a computerized pump, or by frequent injections at a doctor’s office.</p>
<p>Minimally Invasive Surgery &#8211; Cryosurgery takes about 2 hours with a possible overnight admission.</p>
<p>Shrinking the Prostate &#8211; Surgical castration patients return home the day of the surgery. Treatment is given orally or by injection.</p>
<p>Radiation Treatment &#8211; Radiation therapy generally requires 5 treatments per week over 6-8 weeks.</p>
<p>Prostate Removal &#8211; Length of prostatectomy surgeries, recovery times, and hospital stays vary according to specific prostatectomy procedure.</p>
<p>Monitoring and Care &#8211; Expectant therapy includes regular visits to a doctor for prostate specific antigen (PSA) tests and digital rectal exams.</p>
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		<title>Asbestos Lung Cancer</title>
		<link>http://www.science4healthcare.com/2009/08/08/asbestos-lung-cancer/</link>
		<comments>http://www.science4healthcare.com/2009/08/08/asbestos-lung-cancer/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 08:16:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[asbestos]]></category>
		<category><![CDATA[cancer smoking]]></category>
		<category><![CDATA[fatigue]]></category>
		<category><![CDATA[lung cancer]]></category>
		<category><![CDATA[Weight Loss]]></category>
		<category><![CDATA[wheezing]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=60</guid>
		<description><![CDATA[ What is asbestos?
Asbestos is the name given to a group of minerals that occur naturally in the environment as bundles of fibers that can be separated into thin, durable threads. These fibers are resistant to heat, fire, and chemicals and do not conduct electricity. For these reasons, asbestos has been used widely in many [...]]]></description>
			<content:encoded><![CDATA[<p><strong> What is asbestos?</strong><br />
Asbestos is the name given to a group of minerals that occur naturally in the environment as bundles of fibers that can be separated into thin, durable threads. These fibers are resistant to heat, fire, and chemicals and do not conduct electricity. For these reasons, asbestos has been used widely in many industries.</p>
<p>Chemically, asbestos minerals are silicate compounds, meaning they contain atoms of silicon and oxygen in their molecular structure.</p>
<p>Asbestos minerals are divided into two major groups: Serpentine asbestos and amphibole asbestos. Serpentine asbestos includes the mineral chrysotile, which has long, curly fibers that can be woven. Chrysotile asbestos is the form that has been used most widely in commercial applications. Amphibole asbestos includes the minerals actinolite, tremolite, anthophyllite, crocidolite, and amosite. Amphibole asbestos has straight, needle-like fibers that are more brittle than those of serpentine asbestos and are more limited in their ability to be fabricated</p>
<p><center><div id="attachment_61" class="wp-caption alignnone" style="width: 490px"><img class="size-full wp-image-61" title="asbestos" src="http://www.science4healthcare.com/wp-content/uploads/2009/08/asbestos.jpg" alt="Smokers who are also exposed to asbestos have a greatly increased risk of lung cancer" width="480" height="256" /><p class="wp-caption-text">Smokers who are also exposed to asbestos have a greatly increased risk of lung cancer</p></div></center></p>
<p><span id="more-60"></span></p>
<h2 style="font-size: 1.2em; line-height: 1.5em; margin-top: 0px; color: #663333; margin-bottom: 0px;">Asbestos Lung Cancer Among Workers</h2>
<p style="line-height: 1.5em;">Studies show an increase in lung cancer among workers exposed to asbestos. This increase is particularly significant among asbestos–exposed workers who smoke. A dose–response relationship exists both for the degree of asbestos exposure and the amount of cigarette smoking. Search Asbestos and Cigarettes.</p>
<h3 style="color: #4f3d31; margin-bottom: -0.6em; padding-bottom: 0px; font-size: 1em;">Asbestos Lung Cancer Explained</h3>
<p style="line-height: 1.5em;">Most asbestos lung cancer starts in the lining of the bronchi, the tubes into which the trachea or windpipe divides. However, asbestos lung cancer can also begin in other areas such as the trachea, bronchioles (small branches of the bronchi), or alveoli (lung air sacs). Although lung cancer usually develops slowly, once it occurs, cancer cells can break away and spread to other parts of the body.</p>
<p style="line-height: 1.5em;">The two most common types of lung cancer are small cell lung cancer (SCLC), in which the cancer cells are small and round, and non–small cell lung cancer (NSCLC), in which the cancer cells are larger. Sometimes a cancer has features of both types, and is called mixed small cell/large cell cancer.</p>
<p style="line-height: 1.5em;">Non–small cell lung cancer accounts for almost 80% of lung cancers. Small cell lung cancer accounts for about 20% of all lung cancers (American Cancer Society, Lung Cancer). Although the cancer cells are small, they can multiply quickly and form large tumors. The tumors can spread to the lymph nodes and to other organs.</p>
<p style="line-height: 1.5em;">Early–stage asbestos lung cancer may be asymptomatic (without symptoms). The methods used to diagnose asbestos lung cancer include imaging tests, biopsies, and taking phlegm (spit) samples. Search Asbestos Lung Cancer Diagnosis.</p>
<p style="line-height: 1.5em;"><strong>Asbestos can cause the following symptoms:</strong></p>
<p>Shortness of breath, wheezing, or hoarseness.<br />
A persistent cough that gets worse over time.<br />
Blood in the sputum (fluid) coughed up from the lungs.<br />
Pain or tightening in the chest.<br />
Difficulty swallowing.<br />
Swelling of the neck or face.<br />
Loss of appetite.<br />
Weight loss.<br />
Fatigue or anemia.</p>
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		<title>Cancer Symptoms</title>
		<link>http://www.science4healthcare.com/2009/08/06/cancer-symptoms/</link>
		<comments>http://www.science4healthcare.com/2009/08/06/cancer-symptoms/#comments</comments>
		<pubDate>Thu, 06 Aug 2009 13:55:46 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Cancer]]></category>
		<category><![CDATA[blood]]></category>
		<category><![CDATA[doctors]]></category>
		<category><![CDATA[pain]]></category>
		<category><![CDATA[symptoms]]></category>

		<guid isPermaLink="false">http://www.science4healthcare.com/?p=25</guid>
		<description><![CDATA[Cancer Signs and Symptoms
Cancer gives you no symptoms or signs that exclusively indicate the disease. Every complaint for cancer can explain a harmless condition as well. If you have symptoms, however, you should see a doctor for further evaluation. Some common symptoms are as follows:


Persistent cough or blood-tinged saliva

These symptoms usually represent simple infections such asbronchitis [...]]]></description>
			<content:encoded><![CDATA[<h3 style="font-size: 14px; font-weight: bold;">Cancer Signs and Symptoms</h3>
<p style="font-size: 12px; margin-top: 0px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding: 0px;">Cancer gives you no symptoms or signs that exclusively indicate the disease. Every complaint for cancer can explain a harmless condition as well. If you have symptoms, however, you should see a doctor for further evaluation. Some common symptoms are as follows:</p>
<p><center><img class="alignnone size-full wp-image-26" title="skin-cancer" src="http://www.science4healthcare.com/wp-content/uploads/2009/08/skin-cancer.jpg" alt="skin-cancer" width="450" height="300" /></center></p>
<p><span id="more-25"></span></p>
<li>Persistent cough or blood-tinged saliva
<ul>
<li>These symptoms usually represent simple infections such asbronchitis or sinusitis.</li>
<li>They could be symptoms of cancer of your lung, head, and neck. Anyone with a cough that lasts more than a month or with blood in the mucus that is coughed up should see a doctor.</li>
</ul>
</li>
<li>A change in bowel habits
<ul>
<li>Doctors sometimes see pencil-thin stools with colon cancer.</li>
<li>Occasionally, cancer exhibits continuous diarrhea.</li>
<li>Some people with cancer feel as if they need to have a bowel movement and still feel that way after they have had a bowel movement. If any of these abnormal bowel complaints last more than a few days, they require evaluation.</li>
</ul>
</li>
<li>Blood in your stool
<ul>
<li>A doctor always should investigate blood in your stool.</li>
<li>Hemorrhoids frequently cause rectal bleeding, but because hemorrhoids are so common, they may exist with cancer. Therefore, even when you have hemorrhoids, you should have a doctor examine your entire intestinal tract when you have blood in your bowel movements.
<ul>
<li>X-rays may be enough.</li>
<li>Sometimes, when the source of your bleeding is entirely clear, these studies may not be needed.</li>
</ul>
</li>
</ul>
</li>
<li>Unexplained anemia
<ul>
<li>Anemia is a condition in which you have fewer than the expected number ofred blood cells in your blood. Anemia should be investigated.</li>
<li>There are many kinds of anemia, but blood loss almost always causes iron deficiency anemia. Unless there is an obvious source of ongoing blood loss, as there is for menstruating women, this anemia needs to be explained.</li>
<li>Many cancers can cause anemia, but bowel cancers most commonly causeiron deficiency anemia. Evaluation should include endoscopy or x-raystudies of your upper and lower intestinal tracts.</li>
</ul>
</li>
<li>Breast lump or breast discharge
<ul>
<li>Most breast lumps are noncancerous tumors such as fibroadenomas orcysts. But all breast lumps need to be thoroughly investigated.
<ul>
<li>A negative mammogram result is not sufficient to evaluate a breast lump.</li>
<li>Generally, diagnosis requires a needle aspiration or biopsy (a small tissue sample).</li>
<li>Discharge from a breast is common. But some forms of discharge may be signs of cancer. If discharge is bloody or from only 1 nipple, further evaluation is recommended.</li>
</ul>
</li>
<li>Women are advised to conduct monthly breast self-examinations.</li>
</ul>
</li>
<li>Lumps in the testicles
<ul>
<li>Most men (90%) with cancer of the testicle have a painless or uncomfortable lump on a testicle.</li>
<li>Some men have an enlarged testicle.</li>
<li>Other conditions, such as infections and swollen veins, can also cause changes in your testicles, but you should have any lump evaluated.</li>
<li>Men are advised to conduct monthly testicular self-examinations.</li>
</ul>
</li>
<li>A change in urination
<ul>
<li>Urinary symptoms can include frequent urination, small amounts of urine, and slow urine flow.</li>
<li>These symptoms can be caused by urinary infections or, in men, by an enlarged prostate gland.
<ul>
<li>Most men will suffer from harmless prostate enlargement as they age, and will often have these urinary symptoms.</li>
<li>These symptoms may signal prostate cancer.</li>
<li>Men experiencing urinary symptoms need a bit of investigation, probably including a specific blood test called a PSA and a digital rectal exam.</li>
</ul>
</li>
<li>Cancer of the bladder and pelvic tumors can also cause irritation of the bladder and urinary frequency.</li>
</ul>
</li>
<li>Blood in the urine
<ul>
<li>Hematuria or blood in the urine can be caused by urinary infection, kidney stones, or other causes.</li>
<li>For some people, it is a symptom of cancer of the bladder or kidney.</li>
<li>Any episode of blood in the urine should be investigated.</li>
</ul>
</li>
<li>Hoarseness
<ul>
<li>Hoarseness not caused by a respiratory infection or that lasts longer than 3-4 weeks should be evaluated.</li>
<li>Hoarseness can be caused by simple allergy or by vocal cord polyps, but it could also be the first sign of cancer of the throat.</li>
</ul>
</li>
<li>Persistent lumps or swollen glands
<ul>
<li>Lumps most frequently represent harmless conditions. But your doctor should examine any new lump or a lump that won&#8217;t go away.</li>
<li>Lumps may represent cancer or a swollen lymph gland related to cancer.</li>
<li>Lymph nodes swell from infection and other causes and may take weeks to shrink again.</li>
<li>A lump or gland that remains swollen for 3-4 weeks should be evaluated.</li>
</ul>
</li>
<li>Obvious change in a wart or a mole
<ul>
<li>Multicolored moles that have irregular edges or bleed may be cancerous.</li>
<li>Larger moles are more worrisome.</li>
<li>Removing a mole is simple. You should remove any suspicious mole. The doctor will send it for examination under a microscope for skin cancer.</li>
</ul>
</li>
<li>Indigestion or difficulty swallowing
<ul>
<li>Most people with chronic heartburn do not have serious problems.</li>
<li>People who suffer from chronic or lasting symptoms despite using over-the-counter antacids may need to have an upper GI endoscopy.</li>
<li>A condition called Barrett esophagus, which can lead to cancer of the esophagus, can be treated with medication and then monitored by a doctor.</li>
<li>Difficulty swallowing is a common problem, especially in elderly people, and has many causes.
<ul>
<li>Swallowing problems need to be investigated, because nutrition is always important.</li>
<li>Difficulty swallowing solids can be seen with cancer of the esophagus.</li>
</ul>
</li>
</ul>
</li>
<li>Unusual vaginal bleeding or discharge
<ul>
<li>Unusual vaginal bleeding or bloody discharge may be an early sign of cancer of the uterus. Women should be evaluated when they have bleeding after intercourse or bleeding between periods.</li>
<li>Bleeding that comes back, that lasts 2 or more days longer than expected, or that is heavier than usual also merits medical examination.</li>
<li>Postmenopausal bleeding, unless expected on hormone therapy, is also worrisome and should be evaluated.</li>
<li>Usually, the evaluation will include an endometrial biopsy, in which a doctor takes a small tissue sample from inside the uterus for testing.</li>
</ul>
</li>
<li>Unexpected weight loss, night sweats, or fever
<ul>
<li>These nonspecific symptoms might be present with several different types of cancer.</li>
<li>Various infections can lead to similar symptoms.</li>
</ul>
</li>
<li>Continued itching in your anus or genitals
<ul>
<li>Precancerous or cancerous conditions of the skin of the genital or anal areas can cause persistent itching.</li>
<li>You may notice skin color changes.</li>
<li>Several infections or skin conditions also can cause these symptoms. If itching does not stop with over-the-counter topical medications, your doctor should inspect the area.</li>
</ul>
</li>
<li>Nonhealing sores
<ul>
<li>Sores generally heal quickly. If an area fails to heal, you may have cancer and should see a doctor.</li>
<li>Nonhealing sores in your mouth or persistent white or red patches on your gums, tongue, or tonsils are also should raise concerns.</li>
</ul>
</li>
<li>Headaches
<ul>
<li>Headaches have many causes, but cancer is not a common one.</li>
<li>A severe unrelenting headache that feels different from usual can be a sign of cancer.</li>
<li>If your headache fails to improve with over-the-counter medications, see a doctor promptly.</li>
</ul>
</li>
<li>Back pain, pelvic pain, bloating, or indigestion
<ul>
<li>These are common symptoms of daily life. But they also can be seen inovarian cancer.</li>
<li>This cancer is particularly difficult to treat, because it is frequently diagnosed late in the course of the disease.</li>
<li>The American Cancer Society and other organizations have been trying to make both patients and physicians more aware and consider this diagnosis if the classic symptoms are present.</li>
</ul>
</li>
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