Okada Yoshitaka, Morisaka Hiroyuki, Sano Katsuhiro, Yamaguchi Shigeki, Ichikawa Tomoaki
Department of Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, Japan.
Department of Gastroenterological Surgery, Saitama Medical University International Medical Center.
Radiol Case Rep. 2019 Nov 14;15(2):101-104. doi: 10.1016/j.radcr.2019.10.024. eCollection 2020 Feb.
The inferior mesenteric artery arising from the superior mesenteric artery is an extremely rare anatomic variation. We report a case with this variation demonstrated with 3-dimensional contrast-enhanced computed tomography, which later was confirmed at surgery. The ordinary inferior mesenteric artery arising from the aorta was absent. Previously reported cases with this variation are reviewed. 3-dimensional contrast-enhanced computed tomography is useful for in vivo visualization of aberrant arterial anatomy.
发自肠系膜上动脉的肠系膜下动脉是一种极其罕见的解剖变异。我们报告一例经三维对比增强计算机断层扫描显示这种变异的病例，该病例后来在手术中得到证实。发自主动脉的正常肠系膜下动脉缺失。对先前报道的具有这种变异的病例进行了回顾。三维对比增强计算机断层扫描有助于在活体中可视化异常动脉解剖结构。
