A tumoriform lesion of the vulva with features of mammary-type fibrocystic disease.

: Fibrocystic disease is a common benign lesion of the breast. Variably sized cysts, apocrine metaplasia, fibrosis, calcification, chronic inflammation, and epithelial hyperplasia are the basic morphological changes seen in mammary fibrocystic disease. We report a rare tumoriform lesion of the vulva with features of fibrocystic disease, which seems to be the first description of this condition in the vulva. The pertinent literature is discussed. The reported lesion further demonstrates the analogy between tumors of anogenital mammary-like glands and mammary neoplasms.