患者女性，28岁。2年前做左肩部皮肤恶性黑色素瘤切除术，半年前发现左腋下淋巴结肿大，手术切除活检、证实为恶黑转移。现又发现左乳房内肿物，渐增大，无疼痛。体检触及在乳房内肿物如杏核大，质较硬，可活动，与皮肤无粘连，乳头外形无改变；右侧乳房正常。临床诊断为左乳腺 Female patient, 28 years old. Two years ago, he performed left melanotic skin melanoma resection. He discovered lymphadenopathy of the left axillary area half a year ago. His biopsy was performed and his diagnosis was confirmed as ebony metastasis. Now I have also found a left breast intramural mass that gradually enlarges without pain. Physical examination touched the breast masses such as apricot kernels, which were harder, could be active, had no adhesion to the skin, and the shape of the nipples did not change; the right breasts were normal. Clinical diagnosis of left breast