Renal vein thrombosis
A 40 yr old presented with acute onset pain in right lumbar region.
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Markedly elevated serum creatinine level (6.1) precluded administration of contrast. MR imaging (without contrast) was planned.
Markedly swollen, enlarged right kidney, with hypointense parenchymal signal, loss of corticomedullary differentiation and pericapsular heterogeneity.
MRI may help in diagnosis of renal vein thrombosis as creatinine is frequently elevated precluding the contrast enhanced venogram many times.