Renal infarction

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[edit] Discussion

  • 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.

[edit] Imaging Findings

[edit] CT

  • 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.

[edit] Images

Patient #1: CT images demonstrate left renal infarction

Patient #2: CT images demonstrate right renal infarction

[edit] See Also

[edit] External Links

[edit] References

Bruce A. Urban, and Elliot K. Fishman. Tailored Helical CT Evaluation of Acute Abdomen. RadioGraphics 2000 20: 725-749.