| Abstract: | Two adult cases of non-rotation were anatomically analysed. The small intestine occupied the right flank and the colon the left. The ileum crossed the midline to enter the cecum from the right. The appendix vermiformis rested on the front of the cecum and extended upwards. The cecum was located in the lesser pelvis. They had no Ladd's bands, but in the first case fibrous bands from the posterior abdominal wall caused kinking. The colon of the first case had an intricate twist under the left kidney. The second case was also complicated with three loops, the third loop posed between the first and the second, accompanied by a rare vascular anomaly, a double inferior mesenteric artery. © 1993 Wiley-Liss, Inc. |
