Progressive Unilateral Cavitary Lung Disease With Nondiagnostic Bronchoalveolar Lavage Flow Cytometry Mimicking Sarcoidosis: A Case Report

Key Points

• Progressive unilateral cavitary lung disease was observed, resembling sarcoidosis, despite nondiagnostic results.
• Flow cytometry during bronchoalveolar lavage did not yield definitive insights into the lung condition.
• The case involved a 57-year-old man presenting with worsening respiratory symptoms and imaging findings.
• Diagnostic challenges highlight the need for thorough evaluation, as mimicking conditions can complicate treatment.