Fig. 2.

Possible approaches for ablation of a central lesion (white circle). Approach (a) is preferred because it is parallel to the vessels, which decreases the risk of bleeding during the procedure. Approach ( b ) is not advised because it is perpendicular to the vessels, which increases hemorrhage and “ghosting” of the lesion during the procedure. Approach ( c ) is not advised because it crosses a lung fissure (small arrows), which increases the risk of pneumothorax.