Complications composed: bleeding: 2 cases (1 during operated, 1 post-operated), pneumothorax: 2 cases; air in mediastinum: 2 cases (1 during operated, 1 post-operated); collapse the lung: 2 cases (1 during operated, 1 post-operated); chylothorax: 1 case; air subdermic: 1 case, 1 case death.