[A prospective study of pulmonary function in sarcoidosis (author's transl)].

A prospective study of 21 patients with sarcoidosis has been carried out. The patients were divided into two groups with (B) or without (A) radiological evidence of pulmonary involvement. The results show that there exists a correlation only between pulmonary restriction and the degree of radiological involvement, and that the alteration of the other measured functions (pulmonary diffusion, elasticity, peripheral airway involvement) is independent of the radiological stage of the disease. The findings are compared to those of the literature, and the relative value of the different tests in the diagnosis of pulmonary sarcoidosis are discussed.