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soft tissue

Aggressive Fibromatosis (Desmoid Tumor)

Aggressive fibromatosis (AF)(desmoid tumor) is a rare tumor characterized by a monoclonal proliferation of fibroblasts in muscles, tendons, and ligaments. It is histologically benign, but may be locally aggressive, invasive, and destructive. The tumor does not metastasize but recurs frequently following treatment. The clinical presentation, anatomic location, and biologic behavior of this tumor are variable and an individualized treatment approach is required.

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Benign cellular myxoma

Benign cellular myxoma, or cellular myxoma of soft tissue, is a benign myxoid lesion that is histologically partway between intramuscular myxoma and low-grade myxofibrosarcoma. This lesion may also be called intramuscular myxoma.
Adults, with a wide age range - 25 to 83
A mass in the extremitiesNo abnormality on xray
Marginal excision is curative.

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Calcific Periarthritis

Calcific periarthritis is a benign condition characterized by deposits of calcium in the soft tissues around joints. It is often associated with disorders of metabolism.
Most patients with this lesion are middle-aged.
Patients present with local pain, tenderness, swelling, and warmth.Xrays show a mass of homogeneous, amorphous calcific material in the soft tissues near a joint.
No treatment is necessary other than rest and analgesics.

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Collagenous fibroma (desmoplastic fibroblastoma)

Collagenous fibroma (desmoplastic fibroblastoma) is a rare, benign subcutaneous soft tissue tumor that affects mostly men in their 50s to 70s, predominantly on the upper and lower extremities.
Men are affected by this tumor 4 times more frequently than women. The age range is wide, withe the peak age at diagnosis being in the 50s, 60s, and 70s.
Patient presents with a slowly growing painless mass in the subcuticular tissues a peripheral site, most commonly the upper or lower extremities, which may involve skeletal muscle. The size may be from one to several centimeters, with masses as large as 20 cm possible.X-ray findings are normal.
Complete surgical removal is curative.

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