Different breast diseases in men implicate different diagnostic and treatment strategies. Breast pathology is treated several ways. Unfortunately, today, there is no common view regarding the therapy of gynecomastia, inflammatory and traumatic breast diseases, benign lesions, and cancer in men. The principles of treatment of many of them are based on knowledge obtained during the treatment of women with similar pathology. Breast diseases in men are rare, and it takes a long time to collect enough data for analysis. Meanwhile, the diagnostic and treatment methods of breast diseases can change. This fact complicates the study of the treatment of male breast diseases. © Springer International Publishing Switzerland 2015.