DISCUSSION: Lithoptysis is a condition in which erosion and extrusion of calcified peribronchial lymph nodes into the lumen (Broncholith), which is associated with necrotizing granulomatous lymphadenitis.
A calcified or ossified endobronchial lesion without an associated soft-tissue component constitutes a broncholith, having likely reached its location by erosion of a calcified lymph node through an airway wall.