2000
DOI: 10.1590/s0004-282x2000000400022
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Pilocytic astrocytoma following radiotherapy for craniopharyngioma: case report

Abstract: -Administration of fractionated doses of irradiation is part of the adjutant therapy for CNS tumours such as craniopharyngiomas and pituitary adenomas. It can maximise cure rates or expand symptom-free period. Among the adverse effects of radiotherapy, the induction of a new tumour within the irradiated field has been frequently described. The precise clinical features that correlate irradiation and oncogenesis are not completely defined, but some authors have suggested that tumors are radiation induced when t… Show more

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Cited by 4 publications
(1 citation statement)
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“…Gliomas are the most frequent glial tumors following sellar region irradiation [11]. Brada et al described a relative risk of secondary glioma of 7.92 times higher than that of the normal non-irradiated population, with an average latency period to glioma diagnosis of 7 years, in 334 patients with pituitary lesions irradiated to a median dose of 45 Gy for the sellar region [2].…”
Section: Discussionmentioning
confidence: 99%
“…Gliomas are the most frequent glial tumors following sellar region irradiation [11]. Brada et al described a relative risk of secondary glioma of 7.92 times higher than that of the normal non-irradiated population, with an average latency period to glioma diagnosis of 7 years, in 334 patients with pituitary lesions irradiated to a median dose of 45 Gy for the sellar region [2].…”
Section: Discussionmentioning
confidence: 99%