Conclusion
S alvage endoscopic nasopharyngectomy is a feasible treatment to improve patient survival for recurrent NPC. In patients over 50 years of age, diabetes, low BMI (<20),increased NLR (≥6), advanced T stage (rT3 and rT4), lymph node metastasis, and tumor necrosis are the independent prognostic factors for overall survival. However, additional studies with long-term follow up and larger sample size are required.