Balthazar E J, Javors B
Am J Gastroenterol. 1975 Jan;63(1):79-83.
A case of malignant anorectal melanoma is presented together with a short review of the literature. The lesion arises from the melanocytes normally present within the squamous epithelium of the anal canal. It presents as a small polypoid tumor and spreads rapidly into rectum, perirectal tissues, pelvic and inguinal nodes. It should be considered in the differential diagnosis of sessile lesions located or involving the anal canal.
本文报告一例恶性肛管黑色素瘤病例，并对相关文献进行简要综述。该病变起源于肛管鳞状上皮内正常存在的黑素细胞。表现为小的息肉样肿瘤，迅速扩散至直肠、直肠周围组织、盆腔和腹股沟淋巴结。在位于或累及肛管的无蒂病变的鉴别诊断中应考虑该病。
