Roberts W H, Engen P
Anat Anz. 1977;142(3):165-7.
We have recorded the blood supply to a high or subsplenic sigmoid loop from branches of the left colic and first sigmoid arteries. An accessory middle colic present in this case crossed the region immediately superior to the apex of the sigmoid loop. In this instance it arose from the dorsal pancreatic which also gave origin to inferior pancreaticoduodenal branches. Since the high sigmoid may be retroperitoneal, as in the case described, it would not be readily apparent; it would require lateral views to separate it from the descending colon radiographically.
我们已经记录了左结肠动脉和第一乙状结肠动脉分支对高位或脾下乙状结肠袢的血液供应。本例中存在的一支副中结肠动脉跨过乙状结肠袢顶端上方紧邻的区域。在这种情况下，它起自背侧胰动脉，背侧胰动脉还发出胰十二指肠下支。由于高位乙状结肠可能位于腹膜后，如本例所述，它不会很容易被发现；在影像学上需要侧位片才能将其与降结肠区分开来。
