what size colon polyp is considered large?
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This image of the inside of the colon shows a large polyp. Large polyps are 10 millimeters (mm) or larger in diameter (25 mm equals about 1 inch).
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Most colon polyps are found during tests for colorectal cancer. Unless the polyps are large and cause bleeding or pain, the only way to know if you have polyps is to have tests that explore the inside of your colon. Several tests can be used to detect colon polyps.
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Depending on their size and location in the colon, serrated polyps may become cancerous. Small, serrated polyps in the lower colon, also known as hyperplastic polyps, are rarely malignant. Larger serrated polyps, which are typically flat (sessile), difficult to detect and located in the upper colon, are precancerous.
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A large colon polyp can partially obstruct your bowel, leading to crampy abdominal pain. Iron deficiency anemia. Bleeding from polyps can occur slowly over time, without visible blood in your stool.
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Serrated polyps are a type of growth that stick out from the surface of the colon or rectum. The polyps are defined by their saw-toothed appearance under the microscope. They can often be hard to find. The only way to determine the types of polyps is by removing them and examining them under a microscope.
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The large majority of polyps will not become cancers. Certain types of polyps are more likely to turn into cancer. Removal of polyps during a colonoscopy reduces the risk of developing colon cancer in the future.
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This surgery is also called colectomy. The large bowel is also called the large intestine or colon. Removal of the entire colon and the rectum is called a proctocolectomy. Removal of all of the colon but not the rectum is called subtotal colectomy.
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The large intestine, which is the final section of the digestive tract, runs from your small intestine to your anus and is about five feet long, which is longer than most elementary school students are tall. It is divided into three parts: the cecum, the colon, and the rectum.
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Are They Cancerous? Colon polyps don't usually turn into cancer, though bleeding colon polyps might be an early sign of colon cancer. In general, the larger the polyp is, the greater the risk of cancer — particularly with neoplastic polyps (which include adenomas and serrated types of polyps).
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When they first develop, colorectal polyps are typically non-cancerous (benign); however, there is a potential for some polyps to become cancerous (malignant) over time if a physician does not detect and remove them.
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“They grow wide, and creep and creep and creep.” Flat polyps are believed to make up about 9 percent of all polyps. Yet, because they are so difficult to find and remove completely, flat polyps are believed to be responsible for most of the colon cancers that occur in people who are up-to-date with their colonoscopies.
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['Adenomatous (tubular adenoma) About 70 percent of all polyps are adenomatous, making it the most common type of colon polyp. ... ', 'Hyperplastic. ... ', 'Serrated. ... ', 'Inflammatory. ... ', 'Villous Adenoma (Tubulovillous Adenoma)']
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About 70 percent of all polyps are adenomatous, making it the most common type of colon polyp. When this type of polyp is found, it is tested for cancer. Only a small percentage actually become cancerous, but nearly all malignant polyps began as adenomatous.
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Polyps appear as lumps inside the colon. Some are flat and others hang down from a stalk. Each polyp is biopsied and tissue from the polyp is sent to a lab and tested for cancer. While it can be nerve-wracking waiting for the lab results, remember that it takes as many as 10 years for a polyp to become cancerous.
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Colon resection (colectomy) is the surgical removal of part or the entire colon. Colectomy is a major surgery and may take up to four hours for completion. Colectomy is performed under general anesthesia and may require hospitalization for up to a week or more.
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Some colon polyps are benign, which means they are not cancerous, but some can be precancerous or cancerous. The relationship of certain polyps to cancer is well established. Polyps can usually be removed during colonoscopy.
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These types of polyps are not cancer, but they are pre-cancerous (meaning that they can turn into cancers). Someone who has had one of these types of polyps has an increased risk of later developing cancer of the colon. Most patients with these polyps, however, never develop colon cancer.