[Variants of an unfavorable course of sarcoidosis and its differential diagnosis]

The following 3 forms of an unfavorable course of sarcoidosis were identified and described: 1) infiltrative-and-pneumonic; 2) that taking the course of fibrotic alveolitis; and 3) generalized sarcoidosis with hepatolienal syndrome. Clinical and X-ray pictures of these forms together with therapeutic results and outcomes are given.