Emphysematous cystitis

Emphysematous cystitis

Emphysematous cystitis. This patient’s CT shows gas within the lumen and within the wall (arrows) of the urinary bladder, characteristic of a condition called emphysematous cystitis. This tends to develop in diabetic patients (this elderly lady was diabetic) and is usually caused by bacterial infection, most commonly E. coli. Patients often have a history of pneumaturia.