The Clinical Approach Toward Giant Cell Tumor of Bone

Oncologist - Tập 19 Số 5 - Trang 550-561 - 2014
L. van der Heijden1, P. D. S. Dijkstra1, Michiel A. J. van de Sande1, Judith R. Kroep2, Remi A. Nout2, C. S. P. van Rijswijk3, Judith V.M.G. Bovée4, Pancras C.W. Hogendoorn4, Hans Gelderblom2
1Department of Orthopedic Surgery, Leiden University Medical Center, Leiden, The Netherlands
2Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands
3Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
4Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands

Tóm tắt

AbstractWe provide an overview of imaging, histopathology, genetics, and multidisciplinary treatment of giant cell tumor of bone (GCTB), an intermediate, locally aggressive but rarely metastasizing tumor. Overexpression of receptor activator of nuclear factor κB ligand (RANKL) by mononuclear neoplastic stromal cells promotes recruitment of numerous reactive multinucleated giant cells. Conventional radiographs show a typical eccentric lytic lesion, mostly located in the meta-epiphyseal area of long bones. GCTB may also arise in the axial skeleton and very occasionally in the small bones of hands and feet. Magnetic resonance imaging is necessary to evaluate the extent of GCTB within bone and surrounding soft tissues to plan a surgical approach. Curettage with local adjuvants is the preferred treatment. Recurrence rates after curettage with phenol and polymethylmethacrylate (PMMA; 8%–27%) or cryosurgery and PMMA (0%–20%) are comparable. Resection is indicated when joint salvage is not feasible (e.g., intra-articular fracture with soft tissue component). Denosumab (RANKL inhibitor) blocks and bisphosphonates inhibit GCTB-derived osteoclast resorption. With bisphosphonates, stabilization of local and metastatic disease has been reported, although level of evidence was low. Denosumab has been studied to a larger extent and seems to be effective in facilitating intralesional surgery after therapy. Denosumab was recently registered for unresectable disease. Moderate-dose radiotherapy (40–55 Gy) is restricted to rare cases in which surgery would lead to unacceptable morbidity and RANKL inhibitors are contraindicated or unavailable.

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