There is an inverse relationship of the superior mesenteric artery-vein in the epigastric region. Small bowel loops replace the colon on the right side of the abdomen. The ileocaecal junction and the appendix are located in the mid-line in the infraumbilical region. There is no wall thickening of the terminal ileum/ caecum/ appendix. The duodenum does not cross midline under the superior mesenteric artery.