Striated nephrogram - acute pyelonephritis

Case contributed by Dr Mohammad Taghi Niknejad


Fever and flank pain.

Patient Data

Age: 25 years
Gender: Male

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.

Contrast-enhanced CT of the kidneys demonstrates a striated pattern in the kidneys in the nephrographic phase.

Case Discussion

A case of bilateral striated nephrogram on contrast-enhanced CT, consisting of discrete rays of alternating attenuation extending to the cortex. This case is consistent with acute pyelonephritis and is better demonstrated on CT than on excretory urography.

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Case information

rID: 21350
Published: 17th Jan 2013
Last edited: 31st Mar 2021
System: Urogenital
Inclusion in quiz mode: Included

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