Salvage surgery in nasopharyngeal Cancer: Unraveling the efficacy of transnasal endoscopic nasopharyngectomy for advanced stage recurrent tumors.

Abstract

Objective: This systematic review evaluates the efficacy and morbidity of transnasal endoscopic nasopharyngectomy as a salvage treatment for advanced-stage recurrent nasopharyngeal carcinoma (rNPC).

Methods: Following PRISMA guidelines, we conducted a systematic search in Medline, Scopus, and PubMed, identifying studies on transnasal endoscopic nasopharyngectomy for rNPC. Inclusion criteria encompassed histologically confirmed rT3 and rT4 NPC patients previously treated with radiotherapy or chemoradiotherapy. Data on overall survival (OS), disease-free survival (DFS), and complications were extracted and analyzed.

Results: Nine studies, including a total of 429 patients, met the inclusion criteria. Five studies reported 2-year overall survival (OS) rates ranging from 34.6 % to 88.7 %. Three studies reported 3-year OS rates between 50 % and 63.5 %. Long-term 5-year survival varied widely from 0 % to 100 % across three studies. One study detailed 1-year disease-free survival (DFS) and OS at 93 % and 98 %, respectively. The pooled analysis included 429 patients with a median follow-up of 26.1 months. Complications were predominantly minor and transient. Major complications included necrosis, hemorrhage, cranial nerve palsy, and death. Advanced surgical techniques and pre-treatment measures, such as internal carotid artery embolization, improved resection outcomes and reduced complication rates.

Conclusion: Transnasal endoscopic nasopharyngectomy emerges as a viable salvage option for advanced rNPC, offering favorable survival outcomes and manageable complication profiles. Future research should focus on refining surgical techniques and improving patient selection criteria to further enhance treatment efficacy.