Fig. 1. Computed tomography aspect demonstrating the intrapleural position of a chest tube. On axial computed tomography sections, the chest tube is visualized from its entry in the left hemithorax (  image 4 ) to its extremity (  image 1 ),  via its intrapleural route (  images 2 and  3 ). Frontal reconstructions confirm the intrapleural position of the chest tube:  Plane A shows both the entry (  gray arrow ) of the chest tube and its distal tip (  black arrow ), and  plane B shows the ascending and lateral intrapleural route of the chest tube.