Gynaecomastia.

There are two different types of male breast enlargement-gynaecomastia and mammaplasia. A series of 53 consecutive patients with one of these conditions is presented. In the younger age group treatment has usually been conservative, surgery only being advocated when the diagnosis was in doubt or for cosmetic reasons. In the older age group the diagnostic must be confirmed histologically. The incidence of underlying conditions is much higher in this series than in any previously reported.