[Erythema nodosum in sarcoidosis. 37 cases].

Erythema nodosum was seen in 37 out of 564 cases of sarcoidosis, i.e. 6.4. per cent. The female preponderance of the association was 56.8 per cent. It was accompanied by fever in 84 per cent of cases and with an increased sedimentation rate, greater than 50 mm in the first hour, in 44 per cent of cases. Articular manifestations (arthralgia or arthritis) were seen in 73 per cent of cases, with a predilection for the ankles. Progression by acute excerbations of the erythema nodosum and/or articular manifestations was rare. Mediastino-pulmonary involvement accompanying the erythema nodosum included mediastinal lymphadenopathy in all cases. Infiltration of the pulmonary parenchyma was seen in 27 per cent. Spontaneous resolution of the mediastino-pulmonary lesions occurred in 82 per cent of cases, regardless of the initial radiological appearance.