From the case: Acute pyelonephritis

Absent cortical r...
Absent cortical rim sign
Modality: CT

- “ Right sided acute bacterial pyelonephritis. Note the absence of a cortical rim sign. ”

Used in the following article:

  • Cortical rim sign - “ The cortical rim sign is useful in distinguishing acute pyelonephritis from a segmental renal infarct and is seen on contrast enhanced CT or MRI. ...”

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