Gynecomastia treatment is one of the most commonly performed plastic surgery procedures on men. There are numerous published gynecomastia classification systems based on parameters such as size, degree of ptosis, the type of tissue, and other metrics, none of which are universally accepted or applicable to all types of gynecomastia. The role and usefulness that these classifications have in the diagnosis and treatment of gynecomastia are unknown.
The proposed gynecomastia zone classification emerged from recognizing a consistent pattern of contour variations in gynecomastia patients. Appreciating the upper thorax as a regional unit of human anatomy, the zones noted are subunits of this regional anatomy. This is similar to the subunit principle as applied to the nose by Burget and Menick.13
