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OBJECTIVE To compare patients with and without previous lung disease, in terms of the spirometry results after they had been treated for pulmonary tuberculosis (PT and cured, as well as to analyze risk factors related to functional severity. METHODS This was a cross-sectional, multicenter study conducted at four referral centers in Brazil. Patients were divided into two groups those with a history of lung disease or smoking (LDS+ group); and those with no such history (LDS- group). Patients underwent spirometry (at least six months after