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门脉高压可导致门-体侧支循环的开放。临床上以食管-胃的侧支通路为最多见,常引起出血。偶尔,出血可于回肠末端或大肠处的曲张静脉破裂,给诊断和处理带来一定困难。Hamlyn等1974年指出,迄今报告过的门脉高压静脉曲张发生在罕见部位的共28例。其中空肠2例,回肠3例,盲肠及升结肠8例,降结肠4例,直肠-乙状结肠连接处及直肠7例,说明分布到直肠及降结肠的肠系膜下静脉分支容易形成静脉曲张。 Hamlyn等另报告了7例门脉高压均由肝硬化引起,并经肝脏活检证实,并发下消化道出血的原因又全部排除肿瘤、痔、血管瘤或憩室形成。全部均有脾
Portal hypertension can lead to the opening of the portal-to-body collateral circulation. Clinically esophageal - gastric collateral access is the most common, often causing bleeding. Occasionally, hemorrhage in the terminal ileum or large intestine varicose veins rupture, to the diagnosis and treatment of certain difficulties. Hamlyn et al. (1974) pointed out that a total of 28 cases of portal hypertension varices reported to date occurred in rare locations. There were 2 cases of jejunum, 3 cases of ileum, 8 cases of cecum and ascending colon, 4 cases of descending colon, 7 cases of recto-sigmoid colon junction and 7 cases of rectum. It was found that the branches of the superior mesenteric vein distributed to the rectum and descending colon could easily form varicose veins. Hamlyn and others also reported seven cases of portal hypertension caused by cirrhosis, and confirmed by the liver biopsy, complicated by gastrointestinal bleeding and all the exclusion of tumors, hemorrhoids, hemangiomas or diverticulum formation. All have spleen