Imaging of Renal Infections and Inflammatory Disease

Maria Zulfiqar, Cristián Varela Ubilla, Refky Nicola, Christine O. Menias

Research output: Contribution to journalReview articlepeer-review

15 Scopus citations


Acute pyelonephritis is a bacterial infection of the renal parenchyma and collecting system. Diagnosis is based on clinical findings of fever, flank pain, and urinary tract infection. Computed tomography findings include renal enlargement with wedge-shaped heterogeneous areas of decreased enhancement, known as a “striated nephrogram.” Imaging is primarily used to diagnose complications such as emphysematous pyelonephritis, renal abscess, and pyonephrosis. Chronic pyelonephritis can have varying appearances on imaging ranging from xanthogranulomatous pyelonephritis or, in extreme cases, renal replacement lipomatosis.

Original languageEnglish
Pages (from-to)909-923
Number of pages15
JournalRadiologic Clinics of North America
Issue number5
StatePublished - Sep 2020


  • Imaging
  • Pyelonephritis
  • Renal infection
  • Urinary tract infection


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