Fig. 1.

Possible approaches for ablation of a peripheral lesion (white circle). Approach (a) is preferred because it allows the ablation probe to be well seated within the lung and prevents “back burn” from damaging the pleura and possibly creating a bronchopleural fistula. Approach (b) is not advised because it risks the ablation probe becoming dislodged during ablation and may cause “back burn” into the pleura and adjacent chest wall. Approach (c) is not advised because it crosses a lung fissure (small arrows), which increases the risk of pneumothorax.