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Management of pediatric pontine gliomas
I A Langmoen1, T Lundar, I Storm-Mathisen
1Department of Neurosurgery, National Hospital, University of Oslo, Norway.
Insights
Radiation therapy may improve survival for children with intrinsic pontine glioma. Key poor prognostic factors include hemiparesis without cranial nerve symptoms and contrast enhancement on CT scans.
Area of Science:
- Pediatric Oncology
- Neuro-oncology
- Radiotherapy
Background:
- Intrinsic pontine glioma is a challenging pediatric brain tumor.
- Limited data exists on prognostic factors and treatment outcomes.
Purpose of the Study:
- To evaluate prognostic factors and the impact of radiation therapy on survival in children with intrinsic pontine glioma.
Main Methods:
- Retrospective analysis of 36 consecutive pediatric patients with intrinsic pontine glioma.
- Data collected included clinical presentation, imaging findings (CT scans), treatment decisions (radiation therapy), and survival outcomes.
Main Results:
- Median survival was 280 days for irradiated patients versus 140 days for non-irradiated patients.
- Hemiparesis without cranial nerve symptoms and contrast enhancement on CT were identified as poor prognostic factors.
- Age, sex, and symptom duration did not significantly impact prognosis.
Conclusions:
- Radiation therapy appears to confer a survival benefit in pediatric intrinsic pontine glioma.
- Early identification of poor prognostic indicators is crucial for treatment planning.
Abstract:
We present 36 consecutive patients with intrinsic glioma of the pons. Tumors with exophytic expansion were excluded. There were 16 females and 20 males, ranging in age from 2 to 13 years, median 6 years. The most common presenting symptoms were cranial nerve dysfunction, unsteadiness of gait, and hemiparesis. Computed tomography (CT) showed a hypodense (17/21) or isodense (4/21) expansion of the pons. Five tumors had areas of contrast enhancement. Following information about prognosis and possible types of management, parents decided for or against radiation therapy: twenty-four children underwent irradiation and 12 did not. Median survival among children receiving a full course of irradiation was 280 days, compared to 140 days in an equivalent group of non-irradiated children. Hemiparesis presenting without cranial nerve symptoms and contrast enhancement on CT scan were poor prognostic factors, whereas sex, age, and duration of symptoms at diagnosis were unrelated to prognosis.