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有关缺血性直肠炎的发病率和诊断尚有一些争论.估计此病在缺血性结肠炎中占2～5%.缺血性直肠炎呈急性起病,有腹痛、排便习惯改变和直肠出血症状.以往报道此病的主要原因是动脉硬化、腹主动脉瘤和涉及肠系膜下动脉的手术.本文报道—由痔上动脉和边缘动脉外膜肌发育异常致病的病例,并进而研究了50例取自尸检和手术的标本,发现上述动脉外膜层有为数不等的平滑肌者28例,并认为此种异常发生在老年人群时极少引起症状性大肠缺血.病人女性71岁.1977年6月因直肠出血和痔脱垂6个月首次就诊,乙状结肠镜检未见异常,1978年8月乙状结肠镜检时见肠内大便带血和粘液,距肛缘3cm处有息肉样病变,切除后证明为管状腺瘤,术后便血和粘液量增多,时有便秘.1981年6月症状加重,偶伴腹泻,出现直肠脱垂,体重减轻19公
There is some controversy regarding the incidence and diagnosis of ischemic proctitis, which is estimated to account for 2 to 5% of ischemic colitis, with acute onset of ischemic proctitis, abdominal pain, altered bowel habits, and rectal Hemorrhagic symptoms.Previously reported the disease is mainly due to atherosclerosis, abdominal aortic aneurysm and involving the surgery of the inferior mesenteric artery.This paper reports - from the hemorrhoidal artery and peripheral artery muscular dysplasia cases and then studied the Fifty cases of specimens taken from autopsy and surgery were found in 28 cases of the above-mentioned adventitial layer with varying degrees of smooth muscle, and it was considered that this abnormality rarely causes symptomatic intestinal ischemia in the elderly when the patient was 71 years old. 1977 June due to rectal bleeding and hemorrhoids prolapse for the first time 6 months of treatment, sigmoidoscopy no abnormalities, in August 1978 sigmoidoscopy see intestine stool blood and mucus, 3cm away from the anal verge polypus lesions , Proved to be tubular adenoma after resection, increased blood stool and mucus after surgery, sometimes constipation .In June 1981 the symptoms aggravated, even with diarrhea, rectal prolapse, weight loss of 19 public