Aim: Retrospective and basic science data suggest that perioperative regional anaesthesia (PRA) may reduce tumour recurrence after cancer surgery. This retrospective archive study tested the anti-metastatic effect of PRA.
Patients And Methods: We screened the database of the Helsinki University Hospital for patients with breast cancer who had either perioperative paravertebral block (PVB) or sham block (SHAM) in 2000-2003. The exclusion criteria were previous cancer, no cancer, and loss to follow-up. The end-points were disease-free (DFS), distant recurrence-free (DRFS), breast cancer-specific (BCSS) and overall (OS) survival.
Results: The median follow-up time of the 45 PVB and 41 SHAM patients analysed was 12 years. DFS was 79% and 83%, DRFS 84% and 92%, BCSS 81% and 95%, OS 74% and 93% in the PVB and SHAM groups, respectively (p-value for OS = 0.035).
Conclusion: The results do not demonstrate any anti-metastatic effect of PRA.
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