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Urinothorax: a new approach.

Eduardo Garcia-Pachon1, Santiago Romero

  • 1Section of Pneumology, Hospital General Universitario, Elche, Spain. egpachon@hotmail.com

Current Opinion in Pulmonary Medicine
|July 11, 2006
PubMed
Summary

Urinothorax, urine in the pleural space, is a rare cause of pleural effusion. This condition can be classified as obstructive or traumatic, aiding in diagnosis.

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Area of Science:

  • Pulmonology
  • Nephrology
  • Urology

Background:

  • Urinothorax, urine accumulation in the pleural space, is an uncommon cause of pleural effusion.
  • Fewer than 60 cases have been documented historically.
  • Recent case reports enhance understanding of its biochemical profile.

Purpose of the Study:

  • Analyze clinical and biochemical features of urinothorax.
  • Propose a classification based on pathogenic criteria.
  • Improve diagnostic approaches for urinothorax.

Main Methods:

  • Review of recently reported cases of urinothorax.
  • Analysis of clinical presentations and biochemical data.
  • Evaluation of pleural effusion characteristics.

Main Results:

  • Urinothorax is categorized into obstructive (bilateral obstructive uropathy) and traumatic (unilateral urinary tract injury, often iatrogenic).
  • Pleural effusions in urinothorax typically exhibit transudative characteristics.
  • Key biochemical markers include pH < 7.30 and a pleural fluid to serum creatinine ratio > 1.
  • These biochemical markers are not universally present and can overlap with other pleural effusion etiologies.

Conclusions:

  • A pathogenic classification aids in diagnosing urinothorax.
  • Distinguishing between obstructive and traumatic causes is crucial.
  • Biochemical analysis, while helpful, requires careful interpretation due to potential overlap with other conditions.

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