| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (145) | Antalya , Turkey | — | — | — | — | — | Joint Commission International | |
| #2 | 4.5 / 5 (242) | Istanbul, Turkey | 19+ years | — | — | — | Joint Commission International , Turkish Medical Association (Türk Tabıplerı Bırliği) | ||
| #3 | 4.7 / 5 (6) | Istanbul, Turkey | 15+ years | — | — | — | — | ||
| #4 | 4.2 / 5 | Warsaw, Poland | 47+ years | Endoscopic Sinus Surgery, Functional Endoscopic Sinus Surgery | — | — | — | ||
| #5 | 5.0 / 5 (1) | Madrid, Spain | — | — | — | — | — | Joint Commission International , International Organization for Standardization | |
| #6 | 4.6 / 5 | Cairo, Egypt | — | — | — | — | — | Global Hospital Rating | |
| #7 | 2.6 / 5 | Dusseldorf, Germany | — | — | — | — | — | International Accreditation System for Interventional Oncology Services (IASIOS), German Cancer Society | |
| #8 | — / 5 | Incheon, Republic of Korea | 76+ years | Endoscopic Sinus Surgery | — | — | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea), Korean Institute for Healthcare Accreditation | ||
| #9 | 5.0 / 5 | Barcelona, Spain | 15+ years5,000+ treatments | — | — | — | — | ||
| #10 | 4.9 / 5 | Lodz, Poland | — | — | — | — | — | — |