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Biochemical features of urinothorax
Archives of Internal Medicine
|August 1, 1982
Summary
Urinothorax, a rare condition, is diagnosed by finding higher creatinine levels in pleural fluid than in serum. This specific biomarker helps confirm urine in the pleural space, aiding diagnosis in obstructive uropathy patients.
Area of Science:
- Nephrology
- Pulmonology
- Internal Medicine
Background:
- Obstructive uropathy can lead to urine accumulation in the retroperitoneum.
- Rapidly developing pleural effusions are a potential complication in such cases.
- Urinothorax is a rare but serious condition requiring accurate diagnosis.
Observation:
- Three patients with obstructive uropathy and retroperitoneal urine collections presented with rapidly accumulating pleural effusions.
- Analysis of pleural fluid revealed significantly higher creatinine concentrations compared to serum levels.
- Control group analysis confirmed that elevated pleural fluid creatinine is not observed in other pleural effusion etiologies.
Findings:
- Elevated pleural fluid creatinine concentration is a specific diagnostic marker for urinothorax.
- Pleural fluid glucose concentration may also be decreased in patients with urinothorax.
- Creatinine level comparison between pleural fluid and serum is a reliable diagnostic method.
Implications:
- This diagnostic approach can aid clinicians in identifying urinothorax promptly.
- Accurate diagnosis of urinothorax is crucial for timely intervention and management.
- Understanding the biochemical markers of urinothorax can improve patient outcomes.