In the clinic there were operated on 8 patients with bronchogenic and enterogenic mediastinal cyst, complicated by intrathoracic compression of respiratory ways. In 2 children postoperative complications occurred. In presence of secondary tracheomalacia, caused by tracheal compression by bronchogenic cyst, aortopexy was done in conjunction with the cystic formation excision. All the patients survived. In 6 children satisfactory result was noted, in 2--relatively satisfactory one.