[Chronic sarcoidosis-polyarthritis with infantile onset. Persistent synovial granulomas under corticotherapy].

The case of a patient who developed sarcoidosis with chronic joint symptoms at the age of four and still has active disease twenty years later despite three years of corticosteroid therapy is reported. During the course of the disease, specific histologic features of sarcoidosis were evidenced twice in synovial specimens, twice in skin biopsy specimens, and once in bronchial tissue. Deformations and joint lesions developed in the hands and feet. The combination of arthritis, skin lesions, and uveitis occurs both in juvenile-onset sarcoidosis and in chronic juvenile joint diseases, raising significant diagnostic problems which can be solved by histologic studies of synovial or skin biopsy specimens.