CyberKnife Stereotactic Body Radiotherapy for Reirradiation of Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma: Outcomes and Prognostic Factors.
BACKGROUND Stereotactic body radiotherapy (SBRT) is used for reirradiation in recurrent or metastatic head and neck squamous cell carcinoma (RM-HNSCC), but prognostic factors remain unclear. METHODS We retrospectively analyzed 36 RM-HNSCC patients treated with CyberKnife-SBRT (2009-2022). ENDPOINTS local control (L...