Where are rectal tumors located?
Rectal cancer starts in the lining of the rectum (rectal mucosa). Rectal cancer is cancer that begins in the rectum. The rectum is the last several inches of the large intestine. It starts at the end of the final segment of your colon and ends when it reaches the short, narrow passage leading to the anus.
How common are rectal tumors?
Rectal cancer arises from the lining of the rectum. In 2012, more than 40,000 people in the United States will be diagnosed with colorectal cancer, making it the third most common cancer in both men and women. About 5% of Americans will develop colorectal cancer during their lifetimes.
How do they remove a rectal tumor?
The surgeon makes several small incisions (cuts) in the abdomen. The cancer and a margin (edge or rim) of normal tissue around the cancer is removed, along with nearby lymph nodes and other tissues around the rectum. The colon is then reattached to the remaining rectum so that a permanent colostomy is not needed.
Are there tumors in the rectum and perirectal region?
Although most rectal masses are histologically characterized as adenocarcinomas, the rectum and perirectal region can be affected by a wide variety of tumors and tumor-like conditions that can mimic the symptoms caused by rectal adenocarcinoma, including mucosal or submucosal rectal tumors such as l …
How is rectal cancer classified as a sigmoid tumor?
The rectosigmoid junction is arbitrarily defined as 15 cm above the anorectal angle. A tumor more than 15 cm above the anorectal angle is regarded and treated as a sigmoid tumor. Rectal cancer can be divided into: Low rectal cancer: Distal border is 0- 5 cm from the anorectal angle. Mid rectal cancer:
Which is the best surgical treatment for rectal cancer?
TME is the best surgical treatment for rectal cancer provided that the resection margin is free of tumor. It is now a standard technique and part of procedures such as low anterior resection (LAR), in which the rectum and sigmoid colon are resected or abdominoperineal resections (APR), in which the rectum and anal canal are resected.
Where does the rectum extend above the anorectal angle?
The rectum extends from the anorectal junction to the sigmoid. The rectosigmoid junction is arbitrarily defined as 15 cm above the anorectal angle. A tumor more than 15 cm above the anorectal angle is regarded and treated as a sigmoid tumor. Rectal cancer can be divided into: