1病例摘要患者男,81岁。4年前患者左上臂屈侧出现红色丘疹,无自觉症状,未予重视,近2年来皮损逐渐向周围扩大,于2014年11月来我科就诊。患者既往体健,否认肿瘤病史,家族中无类似疾病患者。体格检查:患者一般情况佳,营养中等,发育良好,全身浅表淋巴结未触及增大,心脏、肺部、肝脏及脾脏均正常。皮肤科检查:左上臂屈侧一约2 cm×2 cm红色斑块,无破溃,皮损边缘较规则,表面可见蜡样光 1 case summary Male patient, 81 years old. 4 years ago, the left upper limb flexor side of the red papules, no symptoms, no attention, the past 2 years the lesions gradually expanded to the surrounding, in November 2014 to our department. Past physical health of patients, denied a history of cancer, no similar family disease patients. Physical examination: patients generally good, moderate nutrition, well-developed, systemic superficial lymph nodes did not touch increased, heart, lung, liver and spleen are normal. Dermatology examination: the left upper arm bent about 2 cm × 2 cm red plaque, no ulceration, the lesion edge of the rule, the surface can be seen wax-like light