[Mediastinoscopy and scar-keloid's in boeck's sarcoid (author's transl)]

The paper represents the results of the mediastinoscopy in 135 cases of Boeck's sarcoid. The frequent formation of keloid's in the scar of the mediastinotomy is emphasized. The histological examinations of the scar keloid's after mediastinoscopy are compared with histological examinations of scars after resections of the thyroid glands. The possible reasons of the differences are discussed.