Figure 5b. Diaphragmatic injury after liver RF ablation. (a) Follow-up CT scan obtained 1 day after RF ablation demonstrates two ablated lesions representing metastatic nodules in the right hepatic lobe (arrows). The patient experienced right shoulder pain for 3 months. (b) Follow-up CT scan obtained 1 month after RF ablation shows focal thickening of the diaphragm adjacent to the ablated area (arrow).