3. Clinical Studies on Inferior Mesenteric Arteriography

概要

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63 selective angiographies of the inferior mesenteric artery (=IMA) were studied clinically, included 44 rectal cancer, 4 sigmoid cancer, 3 ulcerative colitis and others. The IMA originated at the level of the third lumbar vertebra was noticed in 67% of the all cases. The left colic artery arisen as an isolated vessel apart from the sigmoid branches was recognized in 68% of the cases, and in 32% cases it was devided as major trunk with one or more sigmoid branches. Exposure of splenic flexure region was noticed in almost cases (98%). Considering the above results, division of the inferior mesenteric trunk wass perfomed routinely in radical rectal procedure without any ischemic complications.<BR>Studies of the IMA angiographic and operative findings in 43 rectal cancer cases dem-onstrated more marked irregularity and displacement of arteriar branches and marginal artery when the tumor was extended through the bowel wall and enlarged over 5cm in diameter. Tumor vessels (tortuous in course, random in distribution, irregular appearance and abnormally tapered) were observed in 39 cases (91%), and premature venous fiillings also were observed in about half cases. Selective arteriography of the IMA offers reliable and valuable information in the diagnosis and evaluation of bowel diseases.
日本大腸肛門病学会の論文