Abstract
A 65-year-old man who was referred to our hospital for intestinal obstruction was diagnosed as having cecal cancer following a colonoscopy. A contrast study through the ileus tube revealed an ileocecal tumor, and the small intestine was located on the right side of the abdomen. An abdominal enhanced computed tomography (CT) scan revealed a superior mesenteric vein (SMV) rotation sign. 3D-CT angiographic findings showed that the ileocolic artery (ICA) branched from the left side of the superior mesenteric artery (SMA) and was running ventral to the SMV. The patient underwent laparoscopic-assisted colectomy based on a diagnosis of cecal cancer with intestinal malrotation. The origins of the ICA were dissected for D3 lymph node dissection. It is important to understand the abnormal anatomy, the site of the tumor, and the path of the vessels using 3D-CT angiography when performing surgery for diseases in patients with intestinal malrotation and when performing laparoscopic-assisted surgery.
