lymphocytic BAL points to inflammatory etiologies

• related: bronchoalveolar lavage BAL
• tags: #permanent
• source: ATS

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• CD4/CD8 > 4 is suggestive of sarcoid (lymphocyte predominant BAL can suggest sarcoidosis)
• lymphocyte > 50% suggests HP hypersensitivity pneumonitis or NSIP
• lymphoid interstitial pneumonia LIP have positive autoimmune labs and lymphocyte BAL results

Links to this note

• bronchoalveolar lavage BAL
  • lymphocytic BAL points to inflammatory etiologies
• lymphocyte predominant BAL can suggest sarcoidosis
  • lymphocyte by itself is not specific (lymphocytic BAL points to inflammatory etiologies)