Temporary breast enlargement may be seen in normal newborn and adolescent boys. Cysts of the breast are uncommon in childhood. Galactocele, defined as an encysted collection of milk products, is an extremely rare cause of breast enlargement in infants and children. We herein report a male infant with bilateral galactocele who was otherwise healthy, and we also review the literature.

Temporary breast enlargement may be seen in normal newborn and adolescent boys. Cysts of the breast are uncommon in childhood. Galactocele, defined as an encysted collection of milk products, is an extremely rare cause of breast enlargement in infants and children. We herein report a male infant with bilateral galactocele who was otherwise healthy, and we also review the literature.