Characteristics of patients with sarcoidosis at the time of diagnosis.

BMI, body mass index; ACE, angiotensin-converting enzyme; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second. Radiographic stages 0, I, II, III, and IV represent a normal appearance, bilateral hilar lymphadenopathy (BHL) alone, BHL and lung parenchymal involvement, lung parenchymal involvement without BHL, and pulmonary fibrosis, respectively.Data are presented as median (interquartile range) or number of patients.a The upper limit of normal level, 21.4 IU/L.b Values for FVC, FVC % predicted, FEV1, and the FEV1/FVC ratio were missing in 10 patients.c Because of extremely low recovery rates and missing data of BAL analyses, values for total cells, lymphocytes, and the CD4/CD8 ratio were not available in six, two, and six patients, respectively.d The upper limit of normal level, 17% [21].Characteristics of patients with sarcoidosis at the time of diagnosis.