desmoid tumor

A desmoid tumor (sometimes referred to as aggressive fibromatosis) is a rare (3 per million population) tumor that may or may not be part of a genetic syndrome such as familial adenomatous polyposis (FAP). Histologically they resemble low-grade fibrosarcomas, but they are very infiltrative and tend to recur even after complete resection (systemic metastasis is rare).Desmoid tumors may be classified as extra-abdominal, abdominal wall, or intra-abdominal (the last is more common in patients with FAP). It is thought that the lesions may develop in relation to estrogen levels or trauma/operations.
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Tumor /tu·mor/ 1. swelling, one of the cardinal signs of inflammation; morbid enlargement. 2. neoplasm; a new growth of tissue in which cell [more]Desmoid tumor - Community and Resources

A tumor of the tissue that surrounds muscles, usually in the abdomen. A desmoid tumor rarely metastasizes (spreads to other parts of the body). Also called aggressive fibromatosis, especially when the tumor is outside the abdomen.