A new bisphosphonate treatment option for giant cell tumors.

Treatment of giant cell tumors (GCT) especially in the vertebrae remains controversial. With multidisciplinary treatments, their results are still insufficient. Moreover, GCT shows the potential for malignant transformation and metastasis, additional options such as adjuvant medication must be considered. We report favorable results in three consecutive cases diagnosed with GCT of the spine which were treated with radiotherapy and bisphosphonate (BP) as a new treatment option, and present a review of the literature and a comparison with these case reports.