Fig. 3.

Kaplan–Meier curves indicating the survival time without local tumor progression (local tumor progression-free survival) per patient. Kaplan–Meier curves showing freedom from local tumor progression (per-patient) for patients with hepatic malignancies treated by percutaneous microwave ablation with either propofol sedation (green line), general anesthesia (orange line) or moderate conscious sedation with midazolam (purple line). Numbers at risk are patients. Overall comparison log-rank (Mantel–Cox) P < 0.019. Death without local tumor progression is censored