Presentation
Fever and pain RHC
Patient Data
Age: 35 years
Gender: Female
From the case:
Renal Abscess
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/92994/annotated_viewer_json?iframe=true\u0026lang=us"}
Multiloculated peripherally enhancing thick walled fluid density area involving upper and mid pole of right kidney, displacing calyceal system. Small loculations bulging out of renal contour posteriorly suggestive of subcapsular rupture. Surrounding fat strandings and thickening of posterolateral perirenal fascia. superiorly it is compressing over inferior surface of liver.
Small right-sided pleural effusion noted.
Case Discussion
Cortical rim sign is thin, viable rim of subcapsular cortex seen on contrast-enhanced CT or MRI. It is used to differentiate renal ischemia from acute pyelonephritis. In this case, cortical rim sign is absent suggestive of inflammatory etiology.