Angiomyofibroblastoma of the male inguinal region

We present a case of benign angiomyxoid tumor arising in the inguinal regio n of a 27-year-old man. The tumor was a gelatinous mass completely encapsul ated by a thin fibrous capsule with no hemorrhage or necrosis. Histological ly, a proliferation of spindle cells as well as occasional pleomorphic cell s was observed within the myxofibrous stroma, intermingled with abundant ca pillary-sized blood vessels. Immunohistochemical staining of the tumor demo nstrated spindle, oval, and pleomorphic cells equally positive for vimentin , desmin, and CD34, but not for or-smooth muscle actin. Based on these hist ologic and immunophenotypic features, we conclude that this angiomyxoid tum or of the male inguinal region is indistinguishable from the female angiomy ofibroblastoma of the pelvic and perineal regions.