The Journal of Bone and Joint Surgery, Vol 68, Issue 7 1073-1079, Copyright © 1986 by Journal of Bone and Joint Surgery, Inc
Secondary malignant giant-cell tumor of bone. Clinicopathological assessment of nineteen patients
MG Rock, FH Sim, KK Unni, GA Witrak, FJ Frassica, MF Schray, JW Beabout and DC Dahlin
Twenty-six patients who had a malignant giant-cell tumor of bone--a sarcoma
either juxtaposed to a zone of typical benign giant-cell tumor or occurring
at the site of a previously documented benign giant-cell tumor--have been
seen at the Mayo Clinic. Of the twenty-six tumors, nineteen were secondary
to a previous attempt at local control of a benign giant-cell tumor. All
but one of these nineteen patients with a secondary tumor had received
therapeutic irradiation four to thirty-nine years earlier. The nature and
duration of the symptoms and the sites of predilection of the malignant
giant-cell tumors were the same as for benign giant-cell tumor.
Fibrosarcoma occurred three times as frequently as osteosarcoma. The best
results of treatment of the secondary sarcoma were obtained with early
ablation.