患者男,52岁。因右侧足跟外侧缘淡红色结节10年于2011年8月8日来我科就诊。10年前患者无意中发现右侧外踝下方一绿豆大圆顶状隆起的结节,无自觉症状,病程中无破溃及渗液,皮损逐渐增至蚕豆大,近1年来自觉轻度瘙痒,因经常搔抓皮疹表面逐渐粗糙,偶有出血。患者既往体健,家族成员无类似病史。体格检查:一般情况好,各系统检查未见明显异 Male patient, 52 years old. The pale red nodule on the lateral border of the right heel came to our department on August 8, 2011. 10 years ago, the patient inadvertently found a mound of large green dome-shaped bulge below the right lateral malleolus, no symptoms, no ulceration and exudation during the course of the disease, skin lesions gradually increased to large faba bean, mild pruritus in the past 1 year, The surface of the rash is gradually rough due to frequent rash, occasional bleeding. The patient was physically fit and family members had no similar medical history. Physical examination: generally good, no obvious differences between the various system checks