Failure of Disposable Domes

reticulonodular and alveolar infiltrates. A diagnosis of spontaneous pneumothorax was made, and a chest tube was inserted and the lung expanded. Grain stains and cultures of sputum were negative. A diagnosis of sarcoidosis was made on the basis of 1) skin and liver biopsies showing noncaseating granulomas; 2) ophthalmologic examination showing anterior uveitis; 3) chest roentgenograms (when lung was expanded) showing bilateral mild hilar lymphadenopathy and fibronodular and alveolar infiltrates; and 4) pulmonary function tests, showing severe restrictive lung disease and marked reduction in single breath pulmonary diffusing capacity and exercise tolerance (Table 1). Oral prednisone therapy was prescribed and the patient was discharged. Two months later the chest roentgenogram showed improvement in infiltrates. Exercise tolerance tests and pulmonary function tests showed progressive improvement (Table 1).