Giant Mastauxe in a Nigerian Neonate: A Case Report

Abstract

Giant neonatal mastauxe is an uncomplicated physiological enlargement of the breasts in newborns, characterised by a breast bud diameter greater than 3 cm. While most newborns have some degree of breast enlargement, giant mastauxe is rare, which may be unnecessarily intervened upon.

A six-week-old term infant presented with bilateral breast enlargement and a history of milky nipple discharge. The mother had an uneventful pregnancy and postnatal experience. The examination revealed firm, non-tender, non-erythematous bilateral breast swellings measuring 9 × 8 cm on the left and 11 × 9 cm on the right. Ultrasonography confirmed their hypoechoic nature with minimal vascularisation. There was no laboratory evidence of an infective process. The baby was discharged home, and while on follow-up care, the breast swellings spontaneously regressed. Giant neonatal mastauxe is rare. Meticulous clinical examination, along with the use of ultrasonography and laboratory investigations, is crucial to differentiate giant mastauxe from neonatal mastitis or breast abscess.