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CT features of renal infarction
Okan Suzer1, Ali Shirkhoda, S Zafar Jafri
1Department of Radiology, William Beaumont Hospital, 3601 W. 13 Mile Rd., Royal Oak, MI 48073, USA.
European Journal of Radiology
|September 28, 2002
Summary
This study highlights diverse renal infarction patterns, introducing the novel "flip-flop enhancement" sign. This finding aids in accurately diagnosing renal infarction, especially in challenging cases.
Area of Science:
- Radiology
- Nephrology
- Medical Imaging
Background:
- Renal infarction diagnosis can be challenging.
- Identifying diverse patterns is crucial for accurate diagnosis.
- The cortical rim sign is a known indicator, but not always present.
Purpose of the Study:
- To illustrate varied renal infarction patterns.
- To introduce and demonstrate the 'flip-flop enhancement' sign.
- To improve diagnostic accuracy and avoid pitfalls in renal infarction detection.
Main Methods:
- Retrospective review of 41 renal infarctions in 37 patients.
- Initial CT scans were analyzed.
- Diagnosis confirmation via follow-up CT or surgical findings.
Main Results:
- Identified patterns: 23 wedge-shaped, 9 global, 5 multifocal infarcts.
- Cortical rim sign was most common in global infarcts.
- A 'flip-flop enhancement' pattern was observed in 5 patients, impacting biopsy decisions.
Conclusions:
- Renal infarction diagnosis can be complex, particularly with tumefactive lesions or global infarcts lacking the cortical rim sign.
- The 'flip-flop enhancement' pattern is proposed as a new diagnostic sign for renal infarction.
- Further research is recommended to explore the association between 'flip-flop enhancement' and renal infarction.