Abstract
Osteosarcoma is the most common nonhemtalogica primary malignancy of bone and is commonly reported in the appendicular skeleton.
Abstracted from Makhdoomi et al. (2010)
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Makhdoomi K, Kursheed N, Ramzan A, et al. Primary osteosarcoma of the cervical spine. Neurosurg Q. 2010;20(4):250–2.
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Abstract from Dekutoski et al. (2016)
Primary spinal osteosarcomas are rare and aggressive neoplasms. Poor outcomes can occur, as obtaining marginal margins is technically demanding; further Enneking-appropriate en bloc resection can have significant morbidity. The goal of this study is to identify prognostic variables for local recurrence and mortality in surgically treated patients diagnosed with a primary osteosarcoma of the spine. A multicenter ambispective database of surgically treated patients with primary spine osteosarcomas was developed by AOSpine Knowledge Forum Tumor. Patient demographic, diagnosis, treatment, perioperative morbidity, local recurrence, and cross-sectional survival data were collected. Tumors were classified in 2 cohorts: Enneking appropriate (EA) and Enneking inappropriate (EI), as defined by pathology margin matching Enneking-recommended surgical margins. Prognostic variables were analyzed in reference to local recurrence and survival. Between 1987 and 2012, 58 patients (32 female patients) underwent surgical treatment for primary spinal osteosarcoma. Patients were followed for a mean period of 3.5 ± 3.5 years (range 0.5 days to 14.3 years). The median survival for the entire cohort was 6.7 years postoperative. Twenty-four (41 %) patients died, and 17 (30 %) patients suffered a local recurrence, 10 (59 %) of whom died. Twenty-nine (53 %) patients underwent EA resection while 26 (47 %) patients underwent EI resection with a postoperative median survival of 6.8 and 3.7 years, respectively (p = 0.048). EI patients had a higher rate of local recurrence than EA patients (p = 0.001). Patient age, previous surgery, biopsy type, tumor size, spine level, and chemotherapy timing did not significantly influence recurrence and survival. Osteosarcoma of the spine presents a significant challenge, and most patients die in spite of aggressive surgery. There is a significant decrease in recurrence and an increase in survival with en bloc resection (EA) when compared with intralesional resection (EI). The effect of adjuvant and neoadjuvant chemotherapeutics, as well as method of biopsy, requires further exploration.
Reference
Dekutoski MB, Clarke MJ, Rose P, et al. Osteosarcoma of the spine: prognostic variables for local recurrence and overall survival, a multicenter ambispective study. J Neurosurg Spine. 2016;25(1):59–68.
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Eltorai, I.M. (2016). Osteosarcoma. In: Rare Diseases and Syndromes of the Spinal Cord. Springer, Cham. https://doi.org/10.1007/978-3-319-45147-3_114
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DOI: https://doi.org/10.1007/978-3-319-45147-3_114
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