[ Monash University ]

Museum of Pathology

CARCINOMA OF MALE BREAST

CARCINOMA OF MALE BREAST

Clinical History

A man aged 74 presented with a lump in the right breast which had been slowly increasing in size.

Pathology

The specimen is a portion of breast which has been sliced through the areola and mounted to display the cut surface. A solid faintly lobulated pale brown tumour 4cm in maximum diameter extends from the superficial dermis into the subcutaneous fat. The overlying epidermis is intact. The pectoral muscles were not involved, and there was no axillary lymphadenopathy. Histologically this tumour was an adenocarcinoma (ductal carcinoma) of the breast.

Note

Carcinoma of the male breast is an uncommon malignant tumour affecting elderly males. Because of the small size of the male breast, there tends to be early involvement of skin and pectoral muscles, and consequent poor prognosis. Histologically the tumour is a ductal or lobular infiltrating carcinoma, the behaviour and pattern of spread of which is identical to that of carcinoma of the female breast.