[Lung biopsies with light microscopic and ultrastructural observations in 34 cases of diffuse pulmonary diseases].

Lung biopsies with light microscopic and ultrastructural observations were performed in 34 cases of diffuse pulmonary diseases. Open lung biopsy 2 cases, transfiberoptic bronchoscopy lung biopsy 32 cases. There were 19 (56%) idiopathic interstitial fibrosis, 3 (9%) pulmonary alveolar proteinosis, 3 (9%) pulmonary sarcoidosis, 1 (3%) idiopathic pulmonary hemosiderosis, 2 (6%) pulmonary mycosis, 1 (3%) alveolar cell carcinoma, 2 (6%) pulmonary tuberculosis and 3 (9%) pulmonary collagen diseases. Diagnosis was based on clinical data and pathologic manifestation. Lung biopsy with light and electronic microscopic examination is useful in etiologic diagnosis and differential diagnosis for diffuse pulmonary diseases.