[The infectious complications of sarcoidosis].

In large cohort studies, infectious complications are rarely observed in the course of sarcoidosis. Only small series or cases reports of infection are described in sarcoidosis. Most of cases are represented by opportunistic infection: cryptococcosis, pneumocystis, nocardiosis, histoplasmosis. Corticosteroids-induced immune suppression, and T-CD4 lymphopenia, are often present in these cases of infection, but are not the only factors.