1临床资料患者女,28岁,因左拇趾左侧起疹2年余就诊,2年前发现左拇趾左侧出现一枚绿豆大小指状皮色丘疹,质地稍韧,稍缓慢增大,未曾破溃,无自觉症状。否认外伤史,平素健康。否认家族中有类似疾病患者。体检:系统检查无异常。皮肤科情况(图1):左足拇趾底部左侧可见一枚绿豆大小的指状增生物,带蒂,表面光滑呈皮色,顶尖。皮损组织病理示(图2):病灶呈外 A clinical data Female, 28 years old, left toe left rash rash more than 2 years of treatment, two years ago found a left-handed left side of a green bean size finger-like papules, slightly tough texture, slightly increased slowly , Never ruined, no symptoms. Denied the history of trauma, usually healthy. Denied family members with similar diseases. Physical examination: No abnormality in system examination. Dermatology (Figure 1): The left side of the left foot can be seen at the bottom of a small finger-like green algae, pedunculated, smooth surface was skin color, the top. Pathological lesions showed (Figure 2): the lesions were outside