Since left colic flexure is a segment of embryonic hindgut and the splenic artery typically supplies the foregut, the condition in which an artery of foregut crosses midgut to supply an area of the hindgut becomes interesting.
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- 本例中变异之动脉发源自供应前肠之脾动脉,再跨越了胚胎中肠部份,而供应原属于后肠发育出之结肠左曲,实为一种罕见的变异状况。