Transbronchial lung biopsy for diagnosis of infiltrative pneumonic and round lesions

: The cytological and histological studies of biopsy specimens obtained from 51 patients with infiltrative pneumonic formations in the lung (Group 1) and in 30 with its round formations (Group 2) at transbronchial intrapulmonary biopsy could verify the etiology of the disease in 86.2 and 20.0% in Groups 1 and 2, respectively. Different diseases may run under the mask of tuberculosis in 36.6% of these patients.