肛管黑色素瘤一例季巧金施忠义患者，女，７９岁。肛门部肿物伴便血３个月，于１９９７年１月７日入院。肛门检查：截石位９点位置近齿状线肛管皮肤上见一无蒂肿块约２ｃｍ直径，表面溃疡形成，质硬易出血。胸片检查正常，腹部肝、胆、胰、脾、肾及后腹膜Ｂ超检查未见占位... Anal melanoma A case of Ji Qiaojin Shi Zhongyi, female, 79 years old. The anal mass was associated with blood in the stool for 3 months and was admitted to hospital on January 7, 1997. Anal examination: At 9 o’clock position near the dentate line, a sinusoidal mass on the skin near the dentate line of the anal canal is about 2 cm in diameter, and the surface ulcer forms, making it hard and easy to bleed. Normal chest X-ray examination, abdominal liver, gallbladder, pancreas, spleen, kidney and retroperitoneal B-ultrasound did not see placeholder ...