[Bronchoalveolar immunoglobulins in sarcoidosis].

In 9 patients with active and 10 patients with inactive sarcoidosis, and in 6 normal controls, the concentration of IgM, IgA and IgG broncho-alveolar lavage (BAL) fluid was measured. Patients with active sarcoidosis showed significantly higher values of these immunoglobulins than patients with inactive sarcoidosis or normals. In addition, a significant correlation between the immunoglobulin levels and the number of helper-T lymphocytes in the BAL fluid was demonstrated.