Carbuncles: A skin abscess, a collection of pus that forms in the skin. Antibiotics may be helpful in treating abscesses, but the main treatments include hot packs and draining (“lancing”) the abscess, but only when it is soft and ready to drain. This should be done by a health care professional. If you have a fever or long-term illness, such as cancer or diabetes, or are taking medications that suppress the immune system, you should contact your healthcare practitioner if you develop an abscess.
- Carcinoembryonic antigen
cancer of the pancreas, stomach, breast, lung, and certain types of thyroid and ovarian cancer. Levels over 20 ng/ml before therapy are associated with cancer which has already metastasized (spread). CEA is useful in monitoring the treatment of CEA-rich tumors. If the CEA is high before treatment, it should fall to normal after successful therapy. […]
Carcinogen: A substance or agent that causes cancer. Related terms include the adjective “carcinogenic” and the nouns “carcinogenesis” and “carcinogenicity.” One of the best-known carcinogens is ionizing radiation. The International Agency for Research on Cancer has classified some 60 substances and processes as probably or definitely carcinogenic in humans. These substances and processes are divided […]
- Carcinoid syndrome
A syndrome due to carcinoid tumor which secretes large amounts of the hormone serotonin. The syndrome is directly due to the serotonin. Features include flushing and blushing, swelling of the face (especially around the eyes), flat angiomas (little collections of dilated blood vessels) on the skin, diarrhea, bronchial spasm, rapid pulse, low blood pressure and […]
- Carcinoid tumor
Carcinoid tumor: A tumor which secretes large amounts of the hormone serotonin. Carcinoid tumor is also called an argentaffinoma. The tumor usually arises in the gastrointestinal tract, anywhere between the stomach and the rectum (the favorite spot is in the appendix) and from there may metastasize (spread) to the liver. In the liver the tumor […]
Cancer that begins in the skin or in tissues that line or cover body organs. Examples are carcinoma of the breast, colon, liver, lung, pancreas, prostate, or stomach.