Ectopic Breast Tissue in the Vagina Detected at the Median Episiotomy Site

Abstract

When regression of the milk line remnants fails during embryogenesis, ectopic breast tissues can arise at any point along the embryonic milk lines. However, ectopic breast tissues could also arise outside the milk lines. A 30-year-old pregnant woman delivered at 38 3/7weeks gestation by normal birth. In the inner side of the hymen at the median episiotomy site, a grayish-brown soft tissue was noted. A clinical provisional diagnosis of inclusion cyst was made. Postoperative histology showed the pathological features of a breast tissue. Excision is recommended for confirming this pathology and treatment. Despite its rarity, ectopic breast tissue should be considered in the differential diagnosis. This is the first case, to our knowledge, of vaginal ectopic breast tissue in a parturient woman.