Then, low radiation dose CT images of the abdomen and pelvis are obtained while you lie on your back and then stomach. CT Colonography: A small tube is inserted into the rectum and air is used to inflate the colon.Polyps and/or tissue samples may be removed and evaluated to determine whether they are cancerous. The camera captures images of the interior of the large intestine. Colonoscopy: This examination uses a flexible tube with a tiny camera at the end, which is inserted through the anus into the colon.In order to diagnose colon cancer your doctor may order: How is colorectal cancer diagnosed and evaluated? Partial or complete blockage of stool/feces passage.Changes in bowel movements such as diarrhea, constipation, bloating or very thin stool.If the cancer has grown to a size where it causes symptoms, these may include: You should talk to your physician about if and when colon cancer screening would be appropriate. Therefore, various methods of colon cancer screening are currently recommended in the hope of finding the polyp or cancer at a time when it can be removed and cured.
Many early stage colon cancers do not cause any symptoms at all. Many colon cancers develop over a long period of time, often arising from pre-cancerous colon polyps that gradually grow and can turn into cancer. The sigmoid colon connects to your rectum which is the lowest part of the large intestine that is located right above the anal canal.įactors such as age, race, personal or family history of colon disease and diet can play a significant role in having an increased risk of developing colorectal cancer. The colon is composed of the cecum/ascending colon (on the right side of your body), the transverse colon (in the middle part of your body), the descending colon (on the left side of your body), and the sigmoid colon (in your pelvis area). The colon (also called the large intestine) is broken up into a few different anatomic segments and attached to your small intestine. Colorectal carcinoma is a cancer, or malignant tumor, of the large intestine, which may affect the colon or rectum.
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