Small and large bowel obstruction due to a benign colonic diverticular stricture (confirmed by endoscopic biopsy and pathologic specimen). The appearance is actually most concerning for a malignant stricture, as on the coronal images there appears to be thickened enhancing soft tissue near the proximal transition point - specifically a scirrhous type of adenocarcinoma. The next appropriate step for this patient is to have a gastroenterology consultation, who can consider a diagnostic (biopsy) and therapeutic (stent) colonoscopy, which was done in this case confirming a benign diagnosis and placing a temporary stent to relieve the obstruction.