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WHO Classification of Tumours
Leiomyosarcoma, NOS
Vulva


Definition

Leiomyosarcoma is an uncommon, aggressive malignant smooth muscle neoplasm, histologically characterized by a proliferation of neoplastic spindle cells. Morphologic variants include epithelioid leiomyosarcoma , myxoid leiomyosarcoma , granular cell and inflammatory leiomyosarcoma
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Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002



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Vulvar leiomyosarcomas affect adult women. The tumours present as rapidly enlarging masses that may be associated with pain. Most cases are high grade tumours with necrosis, infiltrative margins, cytological atypia and mitotic activity

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Tavassoli FA, Devilee P (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Breast and Female Genital Organs.
3rd Edition
IARC Press: Lyon 2003



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