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Int J Radiat Oncol Biol Phys. 2006 Mar 15;64(4):1060-71. Epub 2005 Dec 20.

Spinal cord gliomas: A multi-institutional retrospective analysis.

Author information

1
Department of Radiation Oncology, University of Miami, Miami, FL, USA. mwahab@med.miami.edu

Abstract

PURPOSE:

To determine the impact of postoperative radiation therapy (POXRT) on outcome in spinal cord gliomas.

PATIENTS AND METHODS:

Data from 242 patients were collected retrospectively from six institutions using a standardized data sheet. Pathology specimens, when available, were centrally reviewed.

RESULTS:

A total of 183 patients were analyzed: 82 received surgery alone as initial treatment, whereas 101 had surgery and POXRT. Demographic, diagnostic, and treatment factors were analyzed for impact on progression-free (PFS) and overall survival (OS). PFS in ependymoma patients was 74%, 60%, and 35% at 5, 10, 15 years, respectively, and was significantly influenced by treatment type, race, age, tumor grade, and type of surgery on univariate analysis, with age being the only significant factor on multivariate analysis (MVA) (p = 0.01). OS of ependymoma patients was 91%, 84%, and 75% at 5, 10, and 15 years, respectively, and was significantly influenced by both complete resection (p = 0.04) and age (p = 0.03) on MVA. In astrocytomas, PFS was 42%, 29%, and 15% at 5, 10, and 15 years, and was significantly influenced by POXRT in low- and intermediate-grade tumors on MVA (p = 0.02). OS at 5, 10, and 15 years was 59%, 53%, and 32%, respectively, and was significantly influenced by grade on MVA (p < 0.01).

CONCLUSION:

Postoperative radiation therapy reduced disease progression in low- and moderate-grade astrocytomas. In ependymomas, complete resection significantly influenced OS.

PMID:
16373081
DOI:
10.1016/j.ijrobp.2005.09.038
[Indexed for MEDLINE]
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