Fig. 4

a Dissection of the left upper pulmonary vein, showing clear vision of the web-like avascular plane between the pulmonary vein and the underlying left main pulmonary artery, b this clear vision of the avascular plane between mediastinal structure enables a safe dissection of the large hilar structures like main pulmonary artery, which is very challenging with a conventional 2D thoracoscope, c the HD 3D vision provides the precise direction and orientation of the suture needle, which enables avoidance of any injury to the nearby structures