Figure 1. (A–C) Selected sagittal (A) and Axial (B) computed tomography scans of the upper abdomen with intravenous contrast in the portosystemic venous phase and oral contrast in our patient, who presented with suspected bowel obstruction. The images show focal circumferential narrowing of the descending colon at the splenic flexure, resulting in an “apple core” appearance that is pathognomonic for colonic adenocarcinoma (green arrow) and leads to high-grade bowel obstruction.