[Three cases of primary acute pulmonary cavitation in sarcoidosis].

Sarcoidosis has a variety of pulmonary manifestations including the nodular, or infiltrative form. However, primary cavitary formation is rare. In this report, we describe three cases of sarcoidosis with primary acute pulmonary cavitations. All three patients were young adults (2 men and 1 woman) and chest radiography and chest CT showed bilateral Hilary lymphadenopathy, multiple cavitations with thin, smooth walls, and diffuse granular shadows. Primary acute pulmonary cavitation of sarcoidosis was diagnosed, since a transbronchial biopsy specimen revealed sarcoid granuloma, and there was no evidence of infection, emphysematous change, or fibrotic or cystic bronchiectatic changes on chest radiography in any case. Corticosteroid therapy was given in all cases for severe extrathoracic disease (2 of severe uveitis and 1 of CNS involvement). After the treatment, the multiple cavities and diffuse granular shadows in the lung fields disappeared. We accordingly suggest that corticosteroid therapy is effective for primary acute cavitation in sarcoidosis.