患者男，53岁。鼻梁左侧旁起红色医疹、斑块半年，无自觉症状。患者半年前在鼻梁左侧旁出现一红色丘疹，外用药（具体药名不详）后3个月逐渐增大，并掩成斑块，逐渐呈暗红色。既往无其它慢性病史。体检：系统检查未见明显异常。皮肤科检查：面部左侧耳旁见暗红色斑块，直径均3c Male patient, 53 years old. Nasal left beside the red medical rash, plaque six months, no symptoms. Six months ago, a red papule appeared on the left side of the bridge of the nose. The external medicine (specific drug name unknown) gradually increased in 3 months and became plaque gradually dark red. No previous history of other chronic diseases. Physical examination: no obvious abnormalities in the system examination. Dermatology examination: the face of the left ear to see dark red plaque, diameter 3c