European Journal of Cardiovascular Medicine

Galactocele is a benign breast lesion that occurs commonly during lactating period. It can occur either in normal breast tissue or in accessory breast tissue. We report a galactocele in the left accessory breast tissue. The patient is a 23-year-old female, a mother of two children, who presented with a considerable painful swelling in the left axilla, which is clinically diagnosed as lipoma; however, subsequent investigation revealed it to be a galactocele. The diagnosis of ectopic breast tissue is important as it can undergo the same pathological changes in normal breast tissue, such as mastitis, galactocele, fibrocystic disease, and carcinoma. Galactocele can sometimes also present as suspicious tumoral lesions in axillary accessory breast tissue