: 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.

*Department of Pathology Clinical Oncological Scientific and Practical Centre for Specialized Medical Care Saint Petersburg Russia; †Medical Faculty Saint Petersburg State University Saint Petersburg Russia; ‡Sikl's Department of Pathology Faculty of Medicine in Pilsen Charles University Prague Czech Republic; and §Bioptical Laboratory Pilsen Czech Republic

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