Emphysematous pyelonephritis

Case contributed by Ian Bickle


Diabetic. Fever, right flank pain and dysuria. Abnormal urine dipstick.

Patient Data

Age: 45 years
Gender: Female

Large volume of gas in the right retroperitoneum, largely along the medial perinephric space.

No renal tract stones.

Extensive right intraparenchymal and perinephric gas.

Edematous right kidney, with minor prominence of the collecting system.  Right perinephric inflammatory change.

No renal tract stones.

Case Discussion

Pneumoretroperitoneum is much less common than pneumoperitoneum.

A less frequent cause is from emphysematous pyelonephritis - especially as profound as on this study.

The patient is nearly always diabetic - an obstructing stone may be the trigger - but not always - as in this case.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.