Objectives: To review the scientific evidence on the outcomes of functional endoscopic sinus surgery (FESS) in the treatment of pediatric chronic rhinosinusitis (CRS).
Materials and Methods: A scoping review was conducted in accordance with the PRISMA-ScR (Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews) guidelines. Studies were identified through PubMed, Google Scholar, ScienceDirect, the Hanoi Medical University Library, and domestic medical journals. Inclusion criteria consisted of clinical studies with full-text availability in either Vietnamese or English, published between January 2010 and December 2025, reporting outcomes of FESS for pediatric CRS.
Results: A total of 13 studies involving 1,456 pediatric patients were included in this review. The overall surgical success rate ranged from 62.5% to over 95%, with nasal obstruction showing the greatest symptomatic improvement (65.3%–90.3%). Postoperative Lund–Mackay scores decreased markedly, and this radiological improvement was sustained in several studies with long-term follow-up extending into adulthood. Quality of life improved significantly, as assessed using the SN-5 questionnaire, Glasgow Children's Benefit Inventory (GCBI), and Sino-Nasal Outcome Test-22 (SNOT-22). Endoscopic sinus surgery demonstrated a favorable safety profile. Major complications were reported in only one study (0.3%), whereas postoperative synechiae were the most common minor complication (5.5%–57.1%), particularly among children younger ≤5 years. The revision surgery rate ranged from 0% to 15.5% and was associated with younger age, higher preoperative Lund–Mackay scores, and the presence of allergic rhinitis.
Conclusions: Functional endoscopic sinus surgery (FESS) is a safe and effective treatment option for children with chronic rhinosinusitis (CRS) who have failed appropriate medical therapy. Current evidence suggests that optimal long-term outcomes require appropriate patient selection, comprehensive perioperative management, mucosal-preserving surgical techniques, close postoperative follow-up, and effective management of underlying comorbidities