Bronchiolitis obliterans organizing pneumonia secondary to chronic aspiration of pharmaceutical tablets: Radiologic–pathologic correlation

Bronchiolitis obliterans organizing pneumonia (BOOP) is a clinicopathologic syndrome occurring as a subacute or chronic respiratory illness characterized pathologically by masses of granulation tissue in the lumina of small airways, alveolar ducts, and some alveoli. Chest CT scan findings include ground-glass opacities or consolidations of variable size in a peripheral or peribronchial distribution. We present the clinicoradiological and pathological findings in a rarely described case of BOOP with pulmonary crospovidone deposits secondary to chronic aspiration of pharmaceutical tablets in a neurologically debilitated patient.