- Presentation: Typically acute flank pain and may have hematuria.
- Etiologies: Typically the result of embolism (usually in a diseased heart), aortic dissection, trauma, or thrombosis.
 Imaging Findings
- One or more focal parenchymal defects that involve both the cortex and medulla and extend to the capsular surface.
- With global infarction, the entire kidney is nonperfused.
- Characteristic rim enhancement ("rim nephrogram") representing collateral capsular perfusion may be seen surrounding the nonfunctioning, infarcted kidney.
Patient #1: CT images demonstrate left renal infarction
Patient #2: CT images demonstrate right renal infarction
 See Also
 External Links
Bruce A. Urban, and Elliot K. Fishman. Tailored Helical CT Evaluation of Acute Abdomen. RadioGraphics 2000 20: 725-749.