患者男,75岁。主诉:右侧阴囊黑色斑块20年。现病史:患者20年前无明显诱因发现右侧阴囊根部有一米粒大的黑色斑疹,无任何不适症状,一直未曾诊治。此后皮损缓慢增大,并扩展至邻近阴茎根部。近2年皮损增长速度较前加快,并形成约钱币大斑片,偶有瘙痒感。为明确诊断,患者于2016年3月1日来我科就诊。 Male patient, 75 years old. Chief Complaint: Right scrotum black plaques for 20 years. Current history: The patient had no obvious incentive 20 years ago found a large black spot on the right side of the scrotum, without any discomfort, has not been diagnosed. The lesion then slowly increases and extends proximal to the penis. Skin lesions in the past two years to increase faster than before, and the formation of large coins about coins, occasional sense of itching. To confirm the diagnosis, the patient came to our department on March 1, 2016.