何谓前连接线？答：前连接线乃是新生儿两侧气胸之Ｘ线征象之一。在健康成人及大龄儿童的胸片上是正常的解剖标志，但正常新生儿的心脏及胸腺占据了前纵隔的全部间隙，使两侧胸膜分开。因此，正常新生儿胸片上是不会出现前连接线。当患儿一侧气胸时，胸膜腔膨大，压力升高... What is the front connection? A: The anterior connection is one of the signs of X-ray of the pneumothorax on both sides of the newborn. In healthy adults and older children’s chest X-ray is a normal anatomical landmark, but the normal neonatal heart and thymus occupy the entire anterior mediastinal space, so that both sides of the pleura separated. Therefore, the normal neonatal chest will not appear before the connection line. When the child on one side of the pneumothorax, the pleural cavity enlargement, increased pressure ...