A breast mass in a 56-year-old man.

Ontario, presented to his family physician after finding a lump in his right breast on self-inspection. He described a onemonth history of pressure and tenderness at the site of the mass. No other lumps were detected, and there was no history of fever, sweats, weight loss or previous trauma to the breast. He had a history of obstructive sleep apnea, took no medications and did not use recreational or injection drugs. The patient had no relevant family history and no contacts with people who were ill. His history of travel was limited to his cottage in central Ontario. On examination, a 3-cm mass that extended medially was palpable in the retroareolar area of the patient’s right breast. The mass was rubbery, nontender and did not appear to be tethered to the overlying skin, which was intact. No axillary lymph adenopathy was detected. The left breast and the remainder of the general examination were normal.