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Problems in the initial diagnosis of renal infarction
Internal Medicine (Tokyo, Japan)
|May 1, 1997
Summary
Diagnosing renal infarction presents challenges, with less than half of outpatients initially identified. Subtle hematuria and limited ultrasound findings complicate early detection of this kidney condition.
Area of Science:
- Nephrology
- Radiology
- Diagnostic Medicine
Background:
- Renal infarction, the blockage of blood flow to the kidneys, can lead to significant kidney damage.
- Accurate and timely diagnosis is crucial for effective management and prevention of complications.
Purpose of the Study:
- To identify diagnostic challenges associated with tentative diagnosis of renal infarction.
- To evaluate the utility of common diagnostic methods in identifying renal infarction.
Main Methods:
- Retrospective analysis of 20 confirmed renal infarction cases.
- Review of diagnostic data including urinalysis, laboratory tests (LDH, AST, ALT), abdominal ultrasonography, renal scintigraphy, and contrast-computed tomography.
Main Results:
- Only 4 out of 12 outpatients received a tentative diagnosis of renal infarction.
- Hematuria (less than 2+) was present in 55% of cases.
- Abnormalities were detected by abdominal ultrasonography in only one of 18 cases.
- Elevated lactic dehydrogenase (mean 2,096 IU) and transaminase levels were noted.
Conclusions:
- Tentative diagnosis of renal infarction is challenging due to non-specific symptoms like moderate hematuria.
- Abdominal ultrasonography has limited sensitivity in detecting renal infarction.
- Further investigation with renal scintigraphy or contrast-CT is essential for definitive diagnosis.