RESUMEN
Radiobiology has evolved from a mechanistic model based on DNA damage and response factors into a more complex model that includes effects on the immune system and the tumor microenvironment (TME). Irradiation has an immunomodulatory effect that can manifest as increased anti-tumor immunity or immunosuppression. Irradiation promotes an inflammatory microenvironment through the release of pro-inflammatory cytokines and endothelial damage, which recruit immune system cells to the irradiated area. Radiation-induced immunogenic cell death (ICD), characterized by the release of damage-associated molecular patterns (DAMPs) and tumor antigens, triggers an anti-tumor immune response of both innate and adaptive immunity. Anti-tumor immunity can manifest at a distance from the irradiated area, a phenomenon known as the abscopal effect (AE), which involves dendritic cells and CD8+ T cells. Irradiation also produces an immunosuppressive effect mediated by tumor-associated macrophages (TAMs) and regulatory T lymphocytes (Tregs), which counterbalances the immunostimulatory effect. In this work, we review the mechanisms involved in the radiation-induced immune response, which support the combined treatment of RT and immunotherapy, focusing, where possible, on gynecologic cancer.
RESUMEN
PURPOSE: The present consensus statement was developed by the GINECOR working group on behalf of the Spanish Society of Radiation Oncology (SEOR). This document addresses sexual health management in patients with gynaecological cancer after pelvic radiotherapy. METHODS: A modified two-round online Delphi study was conducted, where GINECOR members were surveyed on the diagnosis, treatment, and follow-up of sexual health problems. An expert panel of radiation oncologists, nurses and a gynaecologist participated in the Delphi study to reach a consensus, applying GRADE criteria to establish the level of agreement. RESULTS: The consensus recommendations cover both diagnosis and treatment, with an emphasis on patient-reported outcome measures (PROMs). They highlight recommendations such as the systematic assessment of genitourinary, gastrointestinal, and sexual symptoms, and the use of several treatments after radiotherapy. Recommendations include pharmacological options like vaginal lubricants and hormone therapy, and mechanical interventions such as vaginal dilators and vibrators. These suggestions stem from both scientific evidence and clinical expertise. CONCLUSION: This consensus statement describes a comprehensive, multidisciplinary approach developed to address the sexual needs and enhance the quality of life of patients with gynaecological tumours after pelvic radiotherapy. It offers specific recommendations for managing sexual issues, emphasizing the importance of specialized care and regular assessment. The document underscores the significance of proactive, patient-centered sexual health management in gynaecological cancer patients.