Perioperative blood transfusion and solid tumor recurrence--a review

Area of Science:

• Oncology
• Immunology
• Transfusion Medicine

Background:

• Conflicting evidence exists on blood transfusions and solid tumor recurrence.
• Retrospective studies, disease complexity, and varied transfusion practices contribute to conflicting data.
• Emerging research highlights potential immunologic consequences of homologous blood transfusions.

Purpose of the Study:

• To review the association between blood transfusions and solid tumor recurrence.
• To explore the immunologic mechanisms potentially linking transfusions to adverse cancer outcomes.
• To provide guidance on transfusion practices in cancer patients.

Main Methods:

• Review of existing literature on blood transfusions and cancer recurrence.
• Analysis of studies investigating immunologic effects of blood transfusions.
• Synthesis of evidence regarding clinical outcomes, including infection susceptibility.

Main Results:

• Data suggest whole blood transfusions are associated with earlier cancer recurrence.
• Homologous blood transfusions can have unforeseen immunologic consequences.
• Potential risks include increased susceptibility to bacterial and viral infections.

Conclusions:

• Blood transfusions, while beneficial, carry significant risks, including potential impact on cancer recurrence.
• Selecting red blood cells instead of whole blood may mitigate some risks.
• Further research is needed to fully elucidate the complex relationship between transfusion and cancer outcomes.