First axial delayed phase CT (Day 3 of admission), on soft tissue window setting, demonstrating a central thick-walled bladder with a Foley catheter balloon in situ; to the anatomical right side of the bladder there is a large bladder diverticulum containing a gas–fluid level with intramural gas; extraluminal gas is seen in the anterior antidependent regions of the pelvis/lower abdomen indicative of perforation.