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Bilateral tuberculous pleural effusions with markedly different characteristics

S Murin1, E Moritz

  • 1Hospital of St. Raphael, New Haven, Conn., USA.

Chest
|September 1, 1996
PubMed
Summary

Tuberculosis (TB) can cause unusual pleural effusions with differing cell counts. This case highlights TB

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Medical Microbiology

Background:

  • Pleural effusions are common clinical findings with diverse etiologies.
  • Tuberculosis (TB) is a significant global infectious disease that can affect the pleura.

Observation:

  • A 72-year-old male presented with constitutional symptoms including malaise, weight loss, and cough.
  • Chest radiography identified bilateral pleural effusions.
  • Thoracentesis revealed distinct characteristics: the left effusion was a lymphocytic exudate, while the right was a neutrophilic, bloody exudate.

Findings:

  • Microbial cultures from both pleural effusions confirmed the presence of Mycobacterium tuberculosis.
  • The contrasting cellularity (lymphocytes vs. neutrophils) and gross appearance (clear yellow vs. bloody) of the effusions are noteworthy.
  • This presentation suggests a complex or evolving tuberculous pleuritis.

Implications:

  • This case underscores the importance of considering Mycobacterium tuberculosis in the differential diagnosis of exudative pleural effusions, even with atypical presentations.
  • Diagnostic thoracentesis with appropriate cultures is crucial for identifying tuberculous pleuritis.
  • Further research into the mechanisms driving differential effusion characteristics in TB could improve diagnostic strategies.

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