患者男，79岁，右足第二趾掌面小黑痣近半年突然增大，破溃。流血水，恶臭味，组织病理检查：恶性黑色素瘤。查体：一般情况良好，系统检查无异常发现。右足轻度肿胀，第1、2、3、4趾及掌前部被6×6×4cm烂牛肉样、褐色、出血性、菜花状肿块覆盖，第二趾掌部有1×2cm的蒂。治疗 The male patient was 79 years old. The black pimple on the second toe of the right foot suddenly increased in the past half year and it collapsed. Bleeding water, foul odor, histopathological examination: malignant melanoma. Physical examination: The general situation is good. No abnormal findings are found in the system check. The right foot was slightly swollen. The first, second, third, and fourth toes and the anterior part of the palm were covered with rotten beef-like, brown, hemorrhagic, cauliflower-like masses of 6×6×4 cm, and a 1×2 cm pedicle on the palm of the second toe. treatment