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Arch Pathol Lab Med. 2000 Nov;124(11):1679-81.

Angiomyofibroblastoma of the male inguinal region.

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  • 1Department of Pathology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan.


We present a case of benign angiomyxoid tumor arising in the inguinal region of a 27-year-old man. The tumor was a gelatinous mass completely encapsulated by a thin fibrous capsule with no hemorrhage or necrosis. Histologically, a proliferation of spindle cells as well as occasional pleomorphic cells was observed within the myxofibrous stroma, intermingled with abundant capillary-sized blood vessels. Immunohistochemical staining of the tumor demonstrated spindle, oval, and pleomorphic cells equally positive for vimentin, desmin, and CD34, but not for alpha-smooth muscle actin. Based on these histologic and immunophenotypic features, we conclude that this angiomyxoid tumor of the male inguinal region is indistinguishable from the female angiomyofibroblastoma of the pelvic and perineal regions.

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