| #1 | | | Istanbul, Turkey | | 33+ years | Gamma Knife, CyberKnife, radiation therapy, bone marrow transplant | Advanced or recurrent osteosarcoma | Offers Gamma Knife and CyberKnife for precise tumor targeting. Affiliated with Johns Hopkins Medicine and accredited by JCI. Over 3,000 bone marrow transplants performed. | International Organization for Standardization, Joint Commission International |
| #2 | | | Barcelona, Spain | | 39+ years1,000+ treatments | Gamma Knife, chemotherapy, immunotherapy | Complex or recurrent osteosarcoma cases | Specializes in oncology with Gamma Knife technology. 94% patient recommendation rate. Offers modern chemotherapy and immunotherapy regimens. | Joint Commission International , European Foundation for Quality Management |
| #3 | | | Vienna, Austria | | 44+ years | — | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek |
| #4 | | | Tel Aviv, Israel | | 41+ years34,000+ treatments | Surgery, chemotherapy, radiotherapy, targeted therapy, cryosurgery, immunotherapy | Complex bone and soft tissue sarcomas | Offers advanced sarcoma treatments with 62% success rate for metastatic cases. Headed by Israel's top sarcoma specialist, Prof. Ofer Merimsky. Uses Foundation One CDx genetic testing to personalize therapy. | World's Best Smart Hospitals 2021 by Newsweek, World's Best Hospitals 2021 by Newsweek |
| #5 | | | Istanbul, Turkey | | 20+ years | Gamma Knife, modular reconstruction with tumor prosthesis, malignant bone tumor extensive resection, chemotherapy | Complex bone tumor cases | Specializes in modular reconstruction and extensive resection for osteosarcoma. Offers Gamma Knife radiation for precise tumor targeting. JCI accredited with multidisciplinary oncology team. | Joint Commission International , Turkish Medical Association (Türk Tabıplerı Bırliği) |
| #6 | | | Bangkok, Thailand | | 19+ years | — | — | — | ISO 9001:2015 Quality management systems |
| #7 | | | Frankfurt am Main, Germany | | 63+ years | Gamma Knife, focused ultrasound, targeted therapy | Advanced sarcoma cases | ESMO-certified oncology center offering Gamma Knife and focused ultrasound. Headed by a top sarcoma specialist with 35+ years of experience. | TÜV AG Сompany Research & Investing Certificate, TOP German hospital according to 2019 Focus ranking |
| #8 | | | Istanbul, Turkey | | 23+ years | Gamma Knife, chemotherapy, targeted drugs, radiotherapy | Complex bone tumors with metastases | Specializes in Gamma Knife treatment for precise tumor targeting. Uses TrueBeam STx radiotherapy for accuracy. Follows NCCN and ESMO protocols. | International Organization for Standardization, Joint Commission International |
| #9 | | | Istanbul, Turkey | | 26+ years | Gamma Knife, chemotherapy, surgery | Unresectable osteosarcoma cases | Specializes in oncology treatments with Gamma Knife technology. Offers chemotherapy and surgical options. Prof. Dr. Erkan Doğan provides expert consultation for osteosarcoma cases. | International Organization for Standardization, Joint Commission International |
| #10 | | | Antalya , Turkey | | 16+ years | — | — | — | Joint Commission International |