CT
Diffuse urinary bladder wall thickening reaching up to 13 mm. Significant intramural and intraluminal air is seen in the urinary bladder. Mild perivesical fat stranding is also noted. No catheter or calculus is seen in the urinary bladder. No radiopaque calculi are seen in the ureters and kidneys. No hydroureteronephrosis or perinephric fat stranding/collection is seen.