Diverticulosis muscle thickening and narrowing on BE and CT colonography

A single contrast barium enema (A) shows diverticulosis (arrowhead) with circular muscle thickening and luminal narrowing of the distal descending colon (double arrow). Source images for a CT virtual colonoscopy reconstructed in the coronal plane show extensive diverticulosis of the descending colon (arrow) with circular muscle thickening and luminal narrowing (arrowhead).