Cancer, rectal: A malignant tumor arising from the inner wall of the end of the large intestine (rectum). In the US, it is the third leading cause of cancer in males and the fourth in females. Risk factors include heredity, colon polyps, and long-standing ulcerative colitis. Most rectal cancers develop from polyps in the colon. Removal of these polyps can prevent cancer. Colon polyps and early rectal cancer can have no symptoms, so regular screening is important. Diagnosis can be made by barium enema or by colonoscopy, with biopsy confirmation of cancer tissue. Surgery is the most common treatment.
- Cancer, skin
Cancer, skin: Cancer of the outer surface of the body. The most common cancer in the U.S. There are many types of skin cancer. Ultraviolet light from sunlight is the main cause of skin cancer. Unexplained changes in the appearance of the skin, lasting longer than 2 weeks, should be evaluated by a doctor. The […]
- Cancer, small cell lung
Cancer, small cell lung: A type of lung cancer in which the cells appear small and round under the microscope. Also called oat cell lung cancer.
- Cancer, stomach
Cancer, stomach: Cancer of the stomach, the main organ that holds food for digestion. Worldwide, stomach cancer is the second most frequent cancer and the second leading cause of death from cancer. It can develop in any part of the stomach and spread to other organs. It is also known as gastric cancer. Duodenal ulcers […]
- Cancer, testicles
Cancer, testicles: Testicular cancer is one of the most common cancers in younger men. The testicles produce the hormone testosterone and makes sperm. This type of cancer is most often found by men themselves as a lump in the testicle. The risk of cancer of the testicles is increased in males whose testicles did not […]
- Cancer, testicular
Cancer, testicular: A malignant tumor of the male sex organ (testicle) that normally produces the hormone testosterone. It is one of the most common cancers in young men. Most testicular cancers are found by men themselves, as lumps in the testicles. The risk of testicular cancer is increased in males whose testicles did not move […]