Anesthetics impact on cancer recurrence: What do we know?

Area of Science:

• Oncology
• Anesthesiology
• Immunology

Background:

• Surgery is a key cancer treatment, but surgical stress, anesthesia, and analgesia can impair immune defenses.
• This impairment may promote tumor metastasis, cancer progression, and recurrence, though anesthesia's role is not fully understood.

Purpose of the Study:

• To review existing clinical data on the association between anesthesia, perioperative analgesia, and cancer recurrence risk.
• To highlight the need for further research into anesthesia's impact on cancer progression.

Main Methods:

• Review of clinical data and in vivo studies.
• Analysis of retrospective studies examining anesthesia, analgesia, and cancer outcomes.

Main Results:

• Some evidence suggests regional anesthesia may be beneficial, potentially decreasing metastasis risk in cancer patients.
• Most current data comes from retrospective studies, indicating a need for more robust evidence.

Conclusions:

• Anesthesia and perioperative care can influence immune responses and potentially affect cancer recurrence.
• Prospective trials are essential to elucidate the specific interactions between anesthetic agents/methods and cancer progression.