Lactating adenoma are rare benign stromal breast tumors that typically occur in the peripartum period. They are prevalent breast tumours during pregnancy and lactation due to breast enlargement and hormonal changes. Aim: To present this rare clinical entity and offer management option Case report: She was Mrs A.C a 25 year old primipara who presented at 8 weeks post-partum at the Surgical outpatient clinic of the Rivers State University Teaching Hospital with a breast swelling. She was first seen at 27 weeks gestation when she declined surgical intervention. On physical examination she had a right non-tender breast mass which measured 8 centimeter (cm) by 6 centimeter (cm). She declined immediate surgery and was commenced on bromocptine. An excellent response with shrinkage was elicited She had a successful left breast lump excision and vertical mammoplasty with anterior and superior pedicles under general anesthesia. Histology revealed lactating adenoma. She was discharged on her 4th post-operative day in good clinical condition. She had an excellent cosmetic result and was in a satisfactory clinical state on subsequent follow-up visits at the surgical outpatient clinic. Conclusion: Lactating adenoma is a rare clinical entity. High index of suspicion should be entertained for patients presenting with this breast tumour with prompt diagnosis and as surgical intervention produces favourable outcome.

Keywords : lactating, adenoma, vertical, mamoplasty, anterior, superior, pedicles. Bromociptine.