Figure 1From: The natural history of adult pulmonary Langerhans cell histiocytosis: a prospective multicentre study The estimated cumulative incidence of lung function deterioration during the study. The overall lung function corresponds to a decrease of at least 15% in FEV1, FVC, and/or DLCO. FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity; DLCO = diffusion capacity for carbon monoxide.Back to article page