The role of fine needle aspiration cytology (FNAC) in the diagnosis of breast masses in males.

The role of fine needle aspiration cytology (FNAC) in the management of male breast masses has been reviewed. Forty-four male patients have been investigated in this way with one carcinoma being diagnosed. The cytological characteristics of the patients in this series with gynaecomastia and carcinoma of the male breast have been described. Although clinically the distinction between male breast carcinoma and gynaecomastia is often difficult, FNAC is an important aid in making this distinction. FNAC is recommended for the evaluation of all breast masses in adult men.