患者，男性，66岁。以“左乳房肿物一年”人院。患者于一年前无明显诱因左乳房红肿，无疼痛，无发热，遂于当地以“左乳腺炎”应用抗生素治疗，半月后红肿消退，原红肿处遗一肿物约黄豆大小，无疼痛及其它不适，未予注意。三个月前左乳房肿物明显生长，增至鹅卵大小，偶觉隐痛不适? Patient, male, 66 years old. Take “left breast mass for one year” person hospital. The patient had no obvious cause of left breast swelling, no pain, no fever a year ago, and he was treated with antibiotics in the local “left mastitis”. After half a month, the swelling disappeared. The original red swelling was a tumor and the size of the soybean was about. Pain and other discomforts were not noticed. Three months ago, the left breast mass grew significantly and increased to the size of the goose egg.