ABSTRACT
Physiologic Gynecomastia It is usually seen in newborns, adolescents at puberty or aging men. In neonates,
circulating maternal estrogens at birth stimulate neonatal breast tissue to hypertrophy. This condition usually resolves spontaneously within a few weeks. The average age of onset of adolescent gynecomastia is 14 years and it commonly disappears by 20 years o f age. It often produces asymmetrical enlargement with accompanying breast tender ness. Declining testosterone levels in aging men can lead to mild gynecomastia.
