临床资料患者,男,54岁。因左耳后皮损渐增多半年余,于2012年6月就诊。患者年幼时左耳后因“疖肿”(具体不详)行局部手术治疗,术后遗留瘢痕;半年余前该瘢痕附近出现一枚粟米大黑色丘疹,皮损渐增大增多,沿外耳郭出现线状排列的多个肤色至灰黑色丘疹及结节,触碰后易出血,自觉轻度瘙痒及疼痛,偶有头晕等不适。既往体健。系统查体无异常。皮肤科情况:左耳后及耳郭外侧见线状排列的粟米至黄豆大肤色、黑色丘疹和结节,部分肤色丘疹内见不均匀黑色颗粒(图1),质硬,轻触痛。实验室及 Clinical data, male, 54 years old. Increased more than six months after the left ear skin lesions, in June 2012 treatment. When the patient is young, the left ear after “疖 swelling” (specific unknown) line local surgical treatment, scar left after surgery; more than six months before the scar appeared a large black papaya, lesions gradually increased and increased along the The outer ear Guo appear linear arrangement of multiple color to gray black papules and nodules, easy to bleed after touching, conscious mild itching and pain, sometimes dizziness and other discomfort. Past physical health. System examination without exception. Dermatology: the left ear and ear outside the see line arrangement of corn to soybean large color, black papules and nodules, some skin color uneven papules see black particles (Figure 1), hard, light touch the pain. Laboratory and