The gynecomastia is the pathological or physiological condition where male breasts abnormally increase in size and volume. Volume may vary from a small to a pubescent breast. Although gynecomastia may develop in one breast or both of them, unilateral gynecomastia predominates.
Physiological gynecomastia: It is the physiological condition in men that occurs during puberty, characterized by unilateral or bilateral enlarged glandular tissue, of gradual growth and associated tenderness. This condition may appear in adult and elderly men. Gynecomastia may occur in newborn babies caused by transplacental transfer of maternal estrogens into the fetal bloodstream.
Pathological gynecomastia: This condition is characterized by development of enlarged glandular tissue of more than 4 cm of diameter and tenderness. Physiological causes are not defined.
Pseudogynecomastia: This is a type of gynecomastia is characterized by the augmentation of adipose tissue without glandular hypertrophy.
It is possible for men to develop breast cancer. Some findings suggest that there is an increasing incidence of breast cancer in men who had suffered from gynecomastia.