Revision 1 for 'Renal cortical necrosis'
Renal cortical necrosis
Renal cortical necrosis is a rare cause of acute renal failure
Usually associated with third-trimester obstetric hemorrhage (particularly placental abruption).
Other causes of renal cortical necrosis include severe traumatic shock, septic shock, transfusion reaction, severe dehydration, venom toxin, hemolytic uremic syndrome, and as a complication of renal transplantation.
[edit]Imaging Findings for Renal cortical necrosis
[edit]CT
Contrast-enhanced CT demonstrates a nonenhancing cortical rim that correlates with the histopathologic findings of the disease.
[edit]MRI
Low signal intensity of the inner renal cortex and the columns of Bertin with every MR imaging sequence is the major characteristic finding of renal cortical necrosis.
Swelling of both kidneys, corticomedullary differentiation on T2-weighted images instead of T1-weighted images, and increased signal intensity of the cortex on T2-weighted images are other features of renal cortical necrosis at MR imagin.
The thin rim of enhanced subcapsular tissue on MR images persists because of its separate capsular blood supply.
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