[Löfgren's syndrome (a description of a case)].

The authors present the modern concepts about the etiology, pathogenesis clinical, X-ray and laboratory characteristics of Löfgren's syndrome in a concise form and then--their own observation on that clinical X-ray variant of sarcoidosis. The diagnosis was objectivized on the base of the data from X-ray findings in lungs and the histological study on the material from the lungs and skin. The pathognomonic significance of the combination of the pulmonary and skin changes are stressed upon in the presence of negative tuberculin tests.