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Diagnostic and prognostic implications of pleural adhesions in malignant effusions

Silvia Bielsa1, José Martín-Juan, José M Porcel

  • 1Department of Internal Medicine, Pleural Diseases Unit, University Hospital Arnau de Vilanova, Unitat de Recerca Biomèdica de Lleida, Lleida, Spain.

Journal of Thoracic Oncology : Official Publication of the International Association for the Study of Lung Cancer
|November 4, 2008
PubMed
Abstract

Insights

Pleural adhesions are common in malignant pleural effusion (MPE). Higher adhesion grades correlate with increased tumor burden and reduced survival, negatively impacting diagnosis and prognosis.

Area of Science:

  • Thoracic oncology
  • Pleural diseases
  • Diagnostic cytology

Background:

  • Malignant pleural effusion (MPE) presents diagnostic and therapeutic challenges.
  • Pleural adhesions can complicate thoracoscopic procedures and impact diagnostic yield.

Purpose of the Study:

  • To determine the frequency of pleural adhesions in MPE patients.
  • To investigate the relationship between pleural adhesions and tumor burden, pleural fluid (PF) characteristics, cytologic yield, and survival.

Main Methods:

  • Retrospective analysis of 540 MPE patients undergoing medical thoracoscopy.
  • Assessment of pleural lesion burden and adhesion grading using a thoracoscopic score model.

Main Results:

  • Sixty percent of MPE patients exhibited pleural adhesions.
  • Pleural adhesions significantly reduced PF cytologic sensitivity (71% without adhesions vs. 20% with maximal adhesions).
  • Adhesion extent correlated positively with tumor burden and inversely with PF pH, and was linked to shorter median survival (5 months vs. 9 months).

Conclusions:

  • MPE frequently involves loculated disease due to adhesions.
  • Increased pleural adhesions indicate greater tumor burden and poorer prognosis.
  • Adhesions paradoxically decrease PF cytologic yield, complicating diagnosis.

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