BACKGROUND: Langerhans cell histiocytosis (LCH) is a rare intricate pediatric neoplasm with varied clinical manifestations and multiple treatment modalities.
BACKGROUND: Mediastinal lymphadenopathy (ML) presents a diagnostic challenge. The technique to sample the lymph nodes has evolved from conventional "blind" transbronchial needle aspiration (TBNA) to the present day endobronchial ultrasound (EBUS)-gui...