Emphysematous pyelonephritis
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Updated: Aug 11, 2026

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
Mohammed Nayeemuddin1, Oliver J Wiseman, Alan G Turner
1Department of Urology, Edith Cavell Hospital, Peterborough, UK. md_nayim@yahoo.com
Background:
A 54-year-old nondiabetic male presented with high fever, vague lower abdominal pain and leakage of urine around his long-standing suprapubic catheter. Examination revealed pyrexia and tenderness in the right renal angle. White cell count was 22.8 x 10(9)/l. Plain abdominal X-ray showed calculi in the right kidney, ureter and bladder. Intravenous pyelogram showed gas confined to the right upper renal pelvis and perinephric space.
Investigations:
Urine and blood cultures, plain abdominal X-ray, intravenous pyelogram, abdominal ultrasound, MAG3 renogram and histopathology.
Diagnosis:
Emphysematous pyelonephritis: class 2 or type 1. Escherichia coli was isolated from urine obtained by endoscopic drainage.
Management:
Endoscopic drainage of pus and simple nephrectomy.
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