Angiomyofibroblastoma of the Vulva

Angiomyofibroblastoma is a benign well-circumscribed tumor characterized by alternating hypocellular and hypercellular areas with abundant thin-walled blood vessels. The tumor cells are bland and spindle-shaped or epitheloid and tend to concentrate around the vessels or cluster in small nests. Herein, we report a case of angiomyofibroblastoma of the left labia major in a 50-year-old female. The tumor measured 18×16×11 cm and appeared as an ulcerated rubbery vulvar mass with rapid enlargement during one month. Ultrasonography demonstrated a soft tissue tumor with homogeneous echo and normal vascularity. Histologically, cells were positive for vimentine, desmin, and estrogen and progesterone receptors but negative for cytokeratin; all in favor of the diagnosis of angiomyofibroblastoma.