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Conservative surgery for giant cell tumors of the sacrum. The role of cryosurgery as a supplement to curettage and partial excision

Background. Giant cell tumors (GCTs) of the sacrum are a difficult clinical problem. Wide excision (total sacrectomy) is associated with high morbidity and pelvic/spinal instability. Curettage with or without supplemental radiotherapy is associated with a high recurrence rate. In view of the proven effectiveness of cryosurgery as an adjunct to curettage for extremity GCT, cryosurgery was used for treatment of GCTs of the sacrum.