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Journal of Bone and Joint Surgery - British Volume, Vol 88-B, Issue 8, 1071-1075.
doi: 10.1302/0301-620X.88B8.17809  
Copyright © 2006 by British Editorial Society of Bone and Joint Surgery
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Treatment and prognosis for synchronous multifocal osteosarcoma in 42 patients

G. Bacci, MD, Chemotherapist1; N. Fabbri, MD, Orthopaedic Surgeon1; A. Balladelli, BA, Basic Research1; C. Forni, FRCS, Basic Research1; E. Palmerini, MD, Chemotherapist1; and P. Picci, MD, Pathologist1

1 Istituti Ortopedici Rizzoli, Via Pupilli 1, 40136 Bologna, Italy.

Correspondence should be sent to Dr G. Bacci; e-mail: gaetano.bacci{at}ior.it

Between 1986 and 2002, 42 patients with synchronous multifocal osteosarcoma were treated with two different protocols of neoadjuvant chemotherapy. When feasible, the primary and secondary tumours were excised as a combined procedure.

After initial chemotherapy 26 patients were excluded from simultaneous excision of all their secondary bone lesions as their disease was too advanced. In 12 patients only isolated excision of the primary lesion was possible. For 16 patients simultaneous operations were conducted to excise the primary and secondary lesions. This involved two supplementary sites in 15 patients and four additional sites in one patient. Of these, 15 attained remission but 12 relapsed and died (11 within two years). Three patients remained disease-free at five, six and 17 years. The histological response to pre-operative chemotherapy of the primary and secondary lesions was concordant in 13 of the 16 patients who underwent simultaneous operations at more than one site.

The prognosis for synchronous multifocal osteosarcoma remains poor despite combined chemotherapy and surgery. The homogeneous histological responses in a large proportion of the primary and secondary lesions implies that synchronous multifocal osteosarcoma tumours are not multicentric in origin, but probably represent bone-to-bone metastases from a single tumour.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General