• Yanxia Sun, Tianzuo Li, and Tong J Gan.
• From the *Department of Anesthesiology, and †Medical Research Center, BeijingTongRen Hospital, Capital Medical University; and ‡Department of Anesthesiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China; and §Department of Anesthesiology, Stony Brook University, Stony Brook, NY.
• Reg Anesth Pain Med. 2015 Sep 1; 40 (5): 589-98.

Background And ObjectivesPotentially, perioperative regional anesthesia and analgesia (RA) could influence the outcomes of patients with cancer. The aim of this systematic review and meta-analysis was to evaluate the effects of perioperative RA on survival and cancer recurrence after oncologic surgery.MethodsThe authors searched computerized databases (from inception to December 2014) and reference lists and considered all studies comparing the effects of RA on cancer recurrence or overall survival with that of general anesthesia (GA). Risk estimates were pooled to determine the effects of RA on risks of cancer recurrence and mortality. Twenty eligible studies were included.ResultsPerioperative RA use was associated with improved overall survival (Hazard ratio [HR] = 0.84, 95% CI, 0.75 - 0.94; I =41%), but not with reduced cancer recurrence (HR=0.91, 95% CI, 0.70 - 1.18; I=83%).ConclusionsOur meta-analysis suggests that RA may improve overall survival but not reduce cancer recurrence after oncologic surgery.

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