Though long considered to be ectopic breast tissue representing the caudal remnants of the milk ridges, anogenital mammary-like glands are nowadays believed to represent a normal constituent of the anogenital area. Lesions involving these glands are histologically similar to their mammary counterparts and can develop the same benign and malignant tumors as the normally located breast. Because of their infrequent presentation, they represent a challenge for physicians.

We present the case of a 38-year-old woman who developed bilateral and painful labial masses a few days after giving birth to her fourth child. Histologic examination revealed ectopic breast tissue of the vulva and a benign tumor (fibroadenoma). We describe the differential diagnoses, treatment and follow-up.