患者女,69岁。因左足外侧缘肿块缓慢增大7年,于2005年4月20日来我院就诊。患者自诉7年前无明显诱因于左足外侧缘出现一绿豆大丘疹,不痛不痒,不影响行走,未予重视。后皮损渐增大,摩擦后易出血。患者既往体健,患处无外伤史,否认有家族遗传病史及类似疾病史。体格检查:各系统检查 Female patient, 69 years old. Due to the lateral left lateral mass slowly increased 7 years, in April 20, 2005 to our hospital. Patient self-indictment 7 years ago, no obvious incentive to appear in the left lateral margin of a mung bean papules, insignificant, does not affect the walking, no attention. Increased skin lesions, easy to bleed after friction. Past physical health of patients, the affected area no history of trauma, denied family history of genetic disease and similar diseases. Physical examination: the system check