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Spine

OUTCOME FOLLOWING COMBINED TREATMENT FOR OSTEOSARCOMA OF THE SPINE

British Association of Spinal Surgeons (BASS)



Abstract

Introduction

Spinal osteosarcomas are quite rare and the optimal treatment strategy is unknown. We report a series of 9 cases of osteosarcoma of the spine treated with intralesional resection and adjuvant combination therapy in order to evaluate their clinico-pathological correlation, recurrence rate and survival.

Materials and Methods

Between 1980 and 2009, nine histologically confirmed cases of primary conventional osteogenic sarcoma of the spine were identified from Scottish Bone Tumour Registry. This prospectively collected registry database was retrospectively reviewed.

Results

There were 9 cases with male predominance (77.7%) at a median age of 39 years (range, 16 – 73 years) and were anatomically distributed as 2-cervical, 6-thoracic, 1-lumbar and 1-sacral. Local and distant staging and histological grading was carried out in all. Seven patients underwent intralesional (including open biopsies) and 2 marginal resections. Seven patients received adjuvant chemotherapy and 8 adjuvant radiotherapy. The overall local recurrence rate was 66.6%. All but one patient died of the disease with a median length of survival of 30 months. The 2-year and 5-year survival rates were 66.6% and 22.2% respectively. Two patients who survived more than 5 years were male patients below the age of 40 years involving thoracic spine (one had a marginal resection without receiving any adjuvant therapy subsequently had a recurrence; other one underwent intralesional resection with adjuvant chemo- and radiotherapy, died with no evidence of disease).

Conclusions

Spinal osteosarcoma in Scottish patients showed a higher median age, thoracic spine and male gender predilection with overall poor prognosis. Local recurrence did not affect the survival adversely, however patients older than 40 years and metastases at presentation showed poor survival compared to age under 40 and non-metastatic presentations.