孤立性直肠溃疡综合征（ＳＲＵＳ）是一种良性疾病，通常表现为慢性难治性直肠溃疡，多为单发，易与直肠癌等恶性疾病混淆［１］。我院１９８５年至１９９５年共行大肠镜检查８２０４例，检出ＳＲＵＳ９例，同期检出直肠癌１８８例，为提高ＳＲＵＳ与直肠癌的鉴别诊断水平... Solitary rectal ulcer syndrome (SRUS) is a benign disease that usually presents as a chronic refractory rectal ulcer, which is mostly single and easily confused with malignant diseases such as rectal cancer [1]. Our hospital performed colonoscopy 8204 cases from 1985 to 1995. 9 cases of SRUS were detected and 188 cases of rectal cancer were detected during the same period. In order to improve the differential diagnosis of SRUS and rectal cancer...