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Radiographic imaging of subcutaneous emphysema secondary to emphysematous cystitis. a CT sagittal section showing gas within the anterior abdominal wall and within the bladder lumen and wall. b CT coronal section showing gas within abdominal wall outside the muscle layer, intra-abdominal but retroperitoneal, and within the bladder wall. c CT axial section showing gas within the bladder base and femoral canal.
