| ALT_DEFINITION |
A malignant tumor of smooth muscle cells that can arise almost anywhere in the body but is most common in the uterus, abdomen, or pelvis. A malignant (cancer) tumor of smooth muscle cells that can arise almost anywhere in the body, but is most common in the uterus, abdomen, or pelvis. A malignant neoplasm, originating from smooth muscle cells.
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| DEFINITION |
An uncommon, aggressive malignant smooth muscle neoplasm, usually occurring in post-menopausal women. It is characterized by a proliferation of neoplastic spindle cells. Morphologic variants include epithelioid, granular cell, inflammatory and myxoid leimyosarcomas.
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