Radiosurgery and accelerated radiotherapy for patients with glioblastoma

G. Shenouda, L. Souhami, E. B. Podgorsak, J. P. Bahary, J. G. Villemure, Jean-louis R Caron, G. Mohr

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Objective: To assess the feasibility, toxicity, and local control of stereotactic radiosurgery followed by accelerated external beam radiotherapy (AEBR) for patients with glioblastoma multiforme. Materials and methods: Six males and eight females, with a median age of 67.5 years (range 45-78 years), entered the study. Karnofsky performance status was 90 for five, 80 for six, and 60 for three patients. Following surgery, the patients were left with a residual mass 4 cm. Radiosurgery was delivered with a single dose of 20 Gy to the 90% isodose surface corresponding to the contrast-enhancing edge of the tumour. A total AEBR dose of 60 Gy in 30 fractions was delivered using a concomitant boost technique over four weeks. Results: Median survival time was 40 weeks (range 17-80 weeks). Actuarial survivals at 12 and 18 months were 43% and 14%, respectively. The median time to progression was 25 weeks (range 2-77 weeks). One patient developed a seizure on the day of stereotactic radiosurgery. Two patients experienced somnolence at 47 and 67 days post-radiotherapy. Eight patients remained steroid-dependent. Radiological evidence of leukoencephalopathy was observed in one patient, and brain necrosis in two additional patients at 30 and 63 weeks. One of these two patients with brain necrosis developed complete loss of vision in one eye, and decreased vision in the contralateral eye at 63 weeks. Conclusion: Stereotactic radiosurgery followed by AEBR was feasible but was associated with late complications. The use of such radiosurgical boost for patients with glioblastoma multiforme should be reserved for those patients entering controlled clinical trials.

Original languageEnglish (US)
Pages (from-to)110-115
Number of pages6
JournalCanadian Journal of Neurological Sciences
Volume24
Issue number2
StatePublished - May 1997
Externally publishedYes

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Radiosurgery
Glioblastoma
Radiotherapy
Necrosis
Leukoencephalopathies
Karnofsky Performance Status
Survival
Controlled Clinical Trials
Brain
Seizures
Steroids

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Shenouda, G., Souhami, L., Podgorsak, E. B., Bahary, J. P., Villemure, J. G., Caron, J. R., & Mohr, G. (1997). Radiosurgery and accelerated radiotherapy for patients with glioblastoma. Canadian Journal of Neurological Sciences, 24(2), 110-115.

Radiosurgery and accelerated radiotherapy for patients with glioblastoma. / Shenouda, G.; Souhami, L.; Podgorsak, E. B.; Bahary, J. P.; Villemure, J. G.; Caron, Jean-louis R; Mohr, G.

In: Canadian Journal of Neurological Sciences, Vol. 24, No. 2, 05.1997, p. 110-115.

Research output: Contribution to journalArticle

Shenouda, G, Souhami, L, Podgorsak, EB, Bahary, JP, Villemure, JG, Caron, JR & Mohr, G 1997, 'Radiosurgery and accelerated radiotherapy for patients with glioblastoma', Canadian Journal of Neurological Sciences, vol. 24, no. 2, pp. 110-115.
Shenouda G, Souhami L, Podgorsak EB, Bahary JP, Villemure JG, Caron JR et al. Radiosurgery and accelerated radiotherapy for patients with glioblastoma. Canadian Journal of Neurological Sciences. 1997 May;24(2):110-115.
Shenouda, G. ; Souhami, L. ; Podgorsak, E. B. ; Bahary, J. P. ; Villemure, J. G. ; Caron, Jean-louis R ; Mohr, G. / Radiosurgery and accelerated radiotherapy for patients with glioblastoma. In: Canadian Journal of Neurological Sciences. 1997 ; Vol. 24, No. 2. pp. 110-115.
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