527 patients of the lung disease hospital filled in questionnaires. Cavernal walls of 22 patients with fibrocavernous lung tuberculosis were studied morphometrically. Among patients with tuberculosis 21.7 +/- 3.6% males and 4.05 +/- 0.8% females smoked. Total amount of tobacco smoke tars was calculated for assessment of their toxic effect. Tars "stimulate" a specific layer of granulation tissue and "inhibit" process of pneumosclerosis. Fibro-cavernous secondary tuberculosis prevails in smokers, tuberculoma and posttuberculosis pneumosclerosis are characteristic for never-smokers.
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