| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (514 reviews) | Istanbul, Turkey | — | — | Lymphoma chemotherapy, Radiotherapy | — | — | International Organization for Standardization, Joint Commission International | |
| #2 | 3.8 / 5 (8 reviews) | Vienna, Austria | — | — | Сonsultation with an oncohematologist | — | — | — | |
| #3 | 4.7 / 5 (154 reviews) | Vienna, Austria | — | — | Сonsultation with an oncohematologist | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek | |
| #4 | 4.6 / 5 (473 reviews) | Istanbul, Turkey | — | — | Radiation therapy for brain tumor, Pituitary tumor surgery | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology | |
| #5 | 5.0 / 5 (53 reviews) | Istanbul, Turkey | — | — | Сonsultation with an oncohematologist | — | — | Joint Commission International , International Organization for Standardization | |
| #6 | 4.7 / 5 (440 reviews) | Barcelona, Spain | — | 23,000+ treatments | CyberKnife for brain tumor, Pituitary tumor surgery | — | — | Joint Commission International , European Foundation for Quality Management | |
| #7 | 4.7 / 5 (132 reviews) | Istanbul, Turkey | 19+ years | Pituitary tumor surgery, Transnasal resection of tumor | — | — | International Organization for Standardization, Joint Commission International | ||
| #8 | 4.5 / 5 (155 reviews) | Tel Aviv, Israel | 38+ years34,000+ treatments | CyberKnife, Bone marrow transplantation | — | — | World's Best Smart Hospitals 2021 by Newsweek, World's Best Hospitals 2021 by Newsweek | ||
| #9 | 3.8 / 5 (6 reviews) | Madrid, Spain | — | — | Allogenic bone marrow transplantation from an unrelated donor, Bone marrow transplantation | — | — | World's Best Hospitals 2021 by Newsweek | |
| #10 | 4.7 / 5 (16 reviews) | Baku, Azerbaijan | — | — | Brain tumor surgery | — | — | Joint Commission International , Patient choice for Check-up |