本文首次报告1例直肠脂肪过多症。患者男性,64岁,仅诉左下腹轻度疼痛。肛检时发现直肠狭窄,但肠壁柔软光滑。钡剂灌肠见直肠均匀性狭窄,粘膜形态良好。钡餐检查见小肠肠段向上移位。静脉肾盂造影见膀胱向上移位,但输尿管未见异常。直肠镜检查见直肠呈管状,Houston瓣消失。活检见粘膜和粘膜下层脂肪异常增多,有大量正常脂肪细胞堆积。 This article reports for the first time in 1 case of rectal adiposis. Male patient, 64 years old, only vomit mild left lower quadrant pain. Rectal examination found rectal stenosis, but the soft and smooth intestinal wall. Barium enema see stricture uniform, mucosal morphology is good. Barium meal see small intestine intestinal segment up shift. Intravenous pyelography see the bladder upward shift, but no abnormal ureter. Rectal examination showed rectal tubular, disappeared Houston flap. Biopsy see mucosal and submucosal fat abnormalities increased, a large number of normal fat cells piled up.