1 病历摘要例1,男,60岁,右耳甲腔内长1圆形肿物,稍突出皮肤表面,肿物表面发黑,无毛发。近2个月自觉逐渐增大,无疼痛及其它不适感觉,故来我科就诊。全身检查一般状态良好,心肺腹未见异常。局部检查可见右耳甲腔内长1黄豆粒大小的黑色肿物,突出 1 Case summary 1. Male, 60 years old, with a round tumor in the cavity of the right ear, slightly protruding from the surface of the skin. The surface of the tumor was dark and hairless. In the past 2 months, I gradually became more conscious and had no pain or other discomfort. Therefore, I came to our department for treatment. The general examination was generally in good condition and no abnormalities were found in the heart and lungs. Local examination revealed a black mass with a soy bean size in the cavity of the right ear, prominent