1.1
Current evidence on the safety of corticosteroid‑eluting bioabsorbable stent or spacer insertion during endoscopic sinus surgery to treat chronic rhinosinusitis raises no major safety concerns. The evidence on efficacy is limited; there is some evidence of improving sinus patency in the short term, but there is inadequate evidence on patient‑reported outcomes and quality of life. Therefore, this procedure should only be used with special arrangements for clinical governance, consent, and audit or research.