Epithelioid leiomyoma of the vulva.

Smooth muscle tumors are uncommon lesions of the vulva and represent a variety of histologic types. When encountered, surgical treatment is guided by the malignant potential of the tumors. This article presents the case of a 45-year-old woman who underwent conservative excision of a 10-cm vulvar lesion consistent with benign epithelioid leiomyoma. This unusual case provides an opportunity to review the clinical and pathologic features of this uncommon variant of leiomyoma and to describe the recently suggested pathologic criteria for determining the malignant potential of smooth muscle tumors arising in the vulva. Knowledge of these criteria can guide the clinician in selecting the appropriate management.