Fig. 1

Series of bedside chest films: a A large quantity of left pleural effusions with inflammation of the right lung; b The left pleural effusion was partly absorbed while the encapsulated gas was added, and the shadow of the right lower lung mass became larger and thicker; c Pneumatosis occurred in the mediastinum, and an extensive accumulation of gas was found in both sides of the neck and under the skin of the chest wall; d The inflammation of both lungs was reduced, and the subcutaneous gas was basically absorbed