３例少见的直肠肛管恶性肿瘤影像学诊断王云华在原发性直肠恶性肿瘤中，直肠癌常见，其它恶性肿瘤均少见。本文报道３例，临床及影像学资料见附表。讨论：本文例１符合１９６１ａＤａｗｓｏｎ提出的胃肠道附表３例直肠肛管恶性肿瘤临床及影像学资料病例性别／年龄症状与体... 3 rare imaging anorectal malignant tumor imaging diagnosis Wang Yunhua In primary rectal cancer, rectal cancer is common, other malignant tumors are rare. This article reported 3 cases, clinical and imaging data in the attached table. Discussion: Example 1 of this article is consistent with the 1961a Dawson’s proposed gastrointestinal epidemic in 3 cases of rectal anal malignancies clinical and imaging data case gender/age symptoms and body...