Simon (1973) Gynecomastia Classification System
According to a study conducted by Bernard F. Simon, M.D., Saul Hoffman, M.D., and Sidney Kahan, M.D. (Ref 2) in 1973, gynecomastia is the most common breast condition among males, accounting for more than 65% of all breast-related disorders in men. Commonly caused by an imbalance between the hormones oestrogen