| RFA | ||
| #Patients | Clustered | |
| Peridiaphragmatic | ||
| Pneumonia | 2 (9.5%) | 2 (28.5%) |
| Pleural effusion* | 1 (4.8%) | |
| Hematoma** | 1 (4.8%) | 1 (14.3%) |
| Total | 4/21 (19.0%) | 3/7 (42.8%) |
| Non-peridiaphragmatic | ||
| Myocardial ischemia | 1 (4.8%) | 1 (16.7%) |
| Total | 1/21 (4.8%) | 1/6 (16.7%) |