[Frequency and characters of familial pulmonary sarcoidosis (author's transl)].

A report is given on familial sarcoidosis in four cases. These 4 cases comprise one brother-sister and one mother-son relationship. Brother and sister were young persons in the acute stage (Löfgren-syndrome). In the other two cases diffuse fibroses accompanied by severe functional disturbances were to be observed. In both relationships clinical and radiological picture, course of the illness and response to the treatment were similar: favourable in the first, unfavourable in the second relationship. The frequency of familial occurrence is said to be 3.7% of all sarcoidosis cases.