we studied 6 men who had some combination of dyspnea , abnormal chest radiographs , resting increased alveolar-arterial oxygen gradients , noncaseating granuloma by lung biopsies , increased serum angiotensin-converting enzyme concentrations , positive gallium lung scans , and increased lymphocyte counts by bronchoalveolar lavage .
C0189485
lung biopsies
C0024109
lung