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Asymmetry of the renal nephrograms on CT: significance of the unilateral prolonged cortical nephrogram
B A Birnbaum1, M A Bosniak, A J Megibow
1Department of Radiology, New York University Medical Center, NY 10016.
Urologic Radiology
|January 1, 1991
Abstract:
The finding of asymmetry in the renal nephrograms as manifested by a unilateral prolonged cortical nephrogram on dynamic contrast-enhanced CT examinations signifies the presence of an abnormality of renal parenchymal perfusion and/or tubular transit. The differential diagnostic possibilities include stenosis or long-standing occlusion of the renal artery, renal vein thrombosis, and urinary tract obstruction.