AskDefine | Define sarcoma

Dictionary Definition

sarcoma n : a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer

User Contributed Dictionary

English

Noun

sarcoma (plural: sarcomas or sarcomata)

Extensive Definition

A sarcoma (from the Greek 'sarx' meaning "flesh") is a cancer of the connective or supportive tissue (bone, cartilage, fat, muscle, blood vessels) and soft tissue. This is in contrast to carcinomas, which are of epithelial origin (breast, colon, pancreas, and others).

Classification

Sarcomas are given a number of different names, based on the type of tissue from which they arise. For example, osteosarcoma arises from bone, chondrosarcoma arises from cartilage, and leiomyosarcoma arises from smooth muscle. Sarcomas strike people in all age ranges, but they are very rare, accounting for only 1% of all cases of cancer. Soft tissue sarcomas, such as leiomyosarcoma, chondrosarcoma, and gastrointestinal stromal tumor (GIST), are more common in adults than in children. GIST is the most common form of sarcoma, with approximately 3000-3500 cases per year in the United States. This should be compared with breast cancer, with approximately 200,000 cases per year in North America. Bone sarcomas, such as osteosarcoma and Ewing's sarcoma, are more common in children than in adults. These tumors most commonly strike adolescents and young adults between the ages of 12 and 25. In addition to being named based on the tissue of origin, sarcomas are also assigned a grade, such as low grade or high grade. Low grade sarcomas are usually treated surgically, although sometimes radiation therapy or chemotherapy are used. High grade sarcomas are more frequently treated with chemotherapy. Since these tumors are more likely to undergo metastasis (spreading to distant sites), these tumors are treated more aggressively. Childhood sarcomas are almost always treated with a combination of surgery and chemotherapy, and radiation is frequently used as well. The recognition that childhood sarcomas are sensitive to chemotherapy has dramatically improved the survival of patients. For example, in the era before chemotherapy, long term survival for patients with localized osteosarcoma was only approximately 20%, but now has risen to 60-70%.

Types of sarcoma

(ICD-O codes are provided where available.)

Notable patients

Famous patients include the Soviet mathematician Nikolai Kochin and Canadian Blues Rock musician, Jeff Healey.

References

External links

sarcoma in Arabic: غرن
sarcoma in Danish: Sarkom
sarcoma in German: Sarkom
sarcoma in Spanish: Sarcoma
sarcoma in Persian: سارکوما
sarcoma in French: Sarcome
sarcoma in Italian: Sarcoma
sarcoma in Hebrew: סרקומה
sarcoma in Dutch: Sarcoom
sarcoma in Japanese: 肉腫
sarcoma in Norwegian: Benvevskreft
sarcoma in Polish: Mięsak
sarcoma in Portuguese: Sarcoma
sarcoma in Swedish: Sarkom
sarcoma in Turkish: Sarkom
sarcoma in Urdu: لحمومہ
sarcoma in Chinese: 肉瘤

Synonyms, Antonyms and Related Words

benign tumor, callosity, callus, cancer, carcinoma, corn, cyst, excrescence, fungosity, fungus, growth, intumescence, malignant growth, metastatic tumor, mole, morbid growth, neoplasm, nevus, nonmalignant tumor, outgrowth, proud flesh, tumor, verruca, wart, wen
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