Abstract
A case of bronchiolitis obliterans organizing pneumonia (BOOP) which showed wandering infiltration and spontaneous remissionis is reported. A 55-year-old male was admitted to our hospital for further examination of an abnormal shadow on chest roentgenogram. His chest roentgenogram showed a ground glass appearance in the right upper and middle lung fields. A month later, the ground glass shadow appeared in the left middle lung field and increased on admission. After admission, his chest roentgenogram showed spontaneous regression without steroid therapy. Transbronchial lung biopsy showed diffuse distribution of thickening of alveolar septae with infiltration of lymphocytes and organized exudates extending from respiratory bronchioles into alveolar ducts and alveoli. These findings were compatible with those of BOOP.
