Prednisolone-induced virginal mammary hypertrophy: Case report

INTRODUCTION: Virginal mammary hypertrophy (VMH) is a rare benign disorder of the breast characterized by excessive enlargement of one or both breasts. It usually presents during adolescence. Drug-induced VMH has been scarcely reported in case reports. Review of the literature showed that prednisolone-induced gigantomastia was reported in a single study on a 47-year-old female. In this study, a case of VMH in a 17-year-old girl following prednisolone treatment will be described. Clinical presentation, clinical findings, diagnostic work-up, management and follow up are discussed. PRESENTATION OF CASE: A 17-year-old, single female presented to the plastic surgery department at our institute with progressive enlargement of both breasts, 2 months following treatment with prednisolone. Incisional biopsy excluded other breast differential diagnoses. The patient was managed surgically with bilateral mammaplasty with free nipple-areola graft. A total of 8.325 kg of breast tissue was resected. Follow-up 48 months postoperatively revealed good patient satisfaction with no recurrence of breast hypertrophy. DISCUSSION: Although the estrogen theory is regarded as the most credible explanation for VMH, several cases of drug-induced mammary hypertrophy have been reported. This study may be the first reported case of adolescent prednisolone-induced VMH. Mammaplasty is an accepted treatment despite its possible association with a higher recurrence rate. CONCLUSION: VMH may be a rare complication of prednisolone treatment. It should be considered in patients presenting with breast hypertrophy following steroid administration.