[Differential diagnosis of gynaecomastia in the mammogram (author's transl)].

The purely clinical examination of swelling in the region of the male mammary gland involves a high error quota and must, therefore, be supplemented by other methods. Mammography has proved to be a reliable diagnostic method in the differential diagnosis of diseases of the mammary gland in the male; this method is of great importance in a positive sense as well. Gynaecomastia, with its typical criteria, must first of all be excluded. This enables the doctor to differentiate between various forms of gynaecomastia and to classify them into a kind of scheme. In all patients over 25 years of age, a carcinoma must be suspected particularly in case of a unilateral finding.