Radiographic manifestations of broncholithiasis.

Calcifications within the lung may produce symptoms when they erode surrounding tissue and move. Lithoptysis, or symptoms related to bronchial obstructions may occur. Under these circumstances, careful attention should be paid to evidence of movement of a calcific focus and its relationship to the bronchi. Six examples are described. Tomography and bronchography are useful. Histoplasma organisms can be demonstrated in most broncholiths in an endemic area. In other areas this entity is becoming unusual, probably because of the declining incidence of tuberculosis. Not all hilar or parenchymal calcifications are innocuous.