American Research Journal of Urology

Infection by gas-forming organisms in the urinary system can produce Emphysematous pyelonephritis (EPN) and has been radiologically graded based on the Computed Tomography (CT) appearance. We present rare radiological images of gas collection inside the renal pelvicalyceal system and the ureter (intrinsic pneumo-pyeloureterogram) without obstruction in a case of EPN treated in our center. EPN producing a pneumo-pyeloureterogram has not so far been reported in literature so far.