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Summary
Cancer surgery can impact immune response, but tumor reduction offers cure. Post-operative immune depression is temporary, with full recovery expected within three weeks.
Area of Science:
- Oncology
- Immunology
- Surgical Science
Background:
- Surgical removal of primary tumors can lead to rapid growth of distant metastases.
- While surgery can cure cancer and restore immunity, anesthetics may temporarily impair immune responses.
- The extent of immune depression is linked to surgical factors, not solely anesthesia.
Purpose of the Study:
- To review the impact of surgical procedures and anesthesia on host immunity in cancer patients.
- To investigate the duration and recovery of immune function following cancer surgery.
- To highlight the need for further research into the clinical significance of transient immune depression.
Main Methods:
- Review of experimental and clinical evidence regarding surgical impact on cancer dissemination and host immunity.
- Analysis of studies on the effects of various anesthetics on immune cell function.
- Examination of post-operative changes in lymphocyte counts, transformation responses, and cellular immunity.
Main Results:
- Surgical reduction of tumor bulk is crucial for cure and immune restoration.
- Immune depression, particularly lymphocyte transformation, occurs early post-surgery and is related to surgical trauma, blood loss, and operative site.
- Specific cellular immunity and delayed hypersensitivity reactions show prolonged depression, returning to normal within three weeks.
Conclusions:
- Cancer surgery can transiently suppress host immunity, with recovery taking up to three weeks.
- The clinical significance of this temporary immune depression requires further investigation.
- Future research should focus on understanding and potentially mitigating post-operative immune suppression in cancer patients.