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结肠大量出血意指出血量危及生命，常需输５个单位血液的结肠出血，可使病人的血红蛋白下降明显。出血部位常难以确定。１病因１１血管扩张症（ａｎｇｉｅｃｔａｓｉｓ）是结肠壁动静脉畸形的一种形式，由于盲肠部位的肠壁张力较高，是血管扩张的好发部位。病变是由于老...
A large number of bleeding in the colon means that the amount of bleeding is life-threatening, often requiring the loss of 5 units of blood in the colon to cause a significant reduction in the patient’s hemoglobin. Bleeding site often difficult to determine. 1 Etiology 1 1 angiosis (angiectasis) is a form of colon wall arteriovenous malformations, due to the higher intestinal wall of the cecum, vasodilation is a good site. Lesions are due to the old ...