[Gynecomastia. Apropos of 122 cases]

Pathological data from 122 cases of gynecomastia are studied. According to the importance of epithelial hyperplasia and of specialised stroma, 3 types are described. Every type is compared with the age of patients, the duration of the illness and occasional etiologic circumstances. It is concluded that these 3 types are not evolutive stages, that type II is the most frequent at any age and that there is no relation between etiology and histological type, except between oestrogenic therapy and type I. The alterations of connective tissue, especially breakdown of elastic fibers, are important.