Figure 2a: CT scans in a 36-year-old woman with a 36-hour history of nausea and vomiting. (a) Transverse CT scan obtained with intravenous and oral contrast agents demonstrates multiple dilated loops of proximal small bowel (black arrow) with inflammatory mass (white arrow) in right lower quadrant, in the region of the cecum. (b) Coronal CT scan shows small-bowel dilatation leading to an inflammatory mass involving the cecum. The point of obstruction (arrow) is at the level of the cecum. Examination of subsequent biopsy specimen of this mass demonstrated adenocarcinoma.