Acute tubular necrosis
Patient went coronary angiogram 9 hours prior.
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renal excretory phase
acute tubular necrosis
The kidneys have a mottled appearance containing multiple areas of high density striations.
Bilateral 'striated nephrogram' was the salient finding.
Final diagnosis: Acute tubular necrosis. Striated nephrogram in this case depicts contrast material trapped in necrosed tubules.