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Diagnosis: Pyelonephritis

Findings: Enlarged right kidney with striated nephrogram consistent with pyelonephritis. In pyelonephritis, the kidneys often appear normal
with kidneys that could be enlarged due to edema. There may be lower attenuation of the affected kidney. Perinephric stranding is also a finding that may be present. Post contrast, as visualized in this image, one can see focal or wedge like areas of hypodensity (striated nephrogram) if in excretory phase.

Credit: Case submitted by Dr. Ellie Goulding M.D. to radRounds Radiology Network