Reverse rim sign (kidney)

The reverse rim sign describes relative hypoenhancement of the renal cortex and normal enhancement of the renal medulla on contrast-enhanced CT and MRI. This enhancement pattern can also be visualized using CEUS 2.

It is a typical finding of renal cortical necrosis that may occur in the setting of renal transplant rejection, intravascular hemolysis, shock, and as an obstetric complication 3.

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Article information

rID: 72572
System: Urogenital
Section: Signs
Tag: cases
Synonyms or Alternate Spellings:

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Cases and figures

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