Pathological breast conditions are rare in childhood and adolescence. The spectrum of breast disease in pediatric patients is different from that in adults and most lesions are benign. Fibroadenomas are the most common type of breast tumor in adolescent girls and young women. These lesions occasionally develop into very large masses, particularly in adolescent girls. Such masses are called solitary giant juvenile fibroadenomas, and local recurrence is unusual. We report here a case of recurrent juvenile giant breast fibroadenoma in a girl with Turner's syndrome.