[Features of development, clinical picture and surgical treatment policy of destructive forms of pulmonary tuberculosis in the North].

In 135 patients, follow-up clinical, X-ray, immunological, and pathomorphological studies revealed that destructive changes in the form took place as an extensive specific process involving more than one lobe with bronchogenic dissemination and, commonly, as caseous pneumonia. Despite the extensive destructive changes, a tuberculous process is torpid, by showing mild clinical manifestations of the onset of the disease. Early lung tissue fibroplastic changes lead to an irreversible process after 4-5 months of antibiotic therapy, which suggests failure to cure them and makes it necessary to apply surgical treatments.