Striated nephrogram - acute pyelonephritis
25 Y/O male with fever and flank pain .
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Contrast-enhanced CT of the kidneys demonstrates a striated paflern in the kidneys in the nephrographic phase.
A striated nephrogram on contrast-enhanced CT that consists of discrete rays of alternating attenuation extending to the cortex is characteristic of acute pyelonephritis and is better demonstrated on CT than on excretory urography.
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