4th World Congress on
Otology, Rhinology & Laryngology
THEME: "Shaping the Future of ENT Through Research and Collaboration"
30-31 Mar 2026 
Barcelona, Spain THEME: "Shaping the Future of ENT Through Research and Collaboration"
30-31 Mar 2026
Barcelona, Spain 
King Fahad Armed Forces Hospital, Saudi Arabia
Title: Outcome of Active Middle Ear Implant in Open Mastoid Cavity Patients: Systematic Review and Meta Analysis
