Chiasmal glioma in neurofibromatosis type 1 with severe visual loss regained with radiation
C Adams1, W A Fletcher, S T Myles
1Department of Pediatric Neurology, Alberta Childrens Hospital, University of Calgary, Canada.
Insights
Children with neurofibromatosis type 1 (NF1) and chiasmal gliomas may experience vision loss. This case report details a child with NF1 and chiasmal glioma who regained significant vision after radiotherapy.
Area of Science:
- Pediatric Oncology
- Neuro-oncology
- Ophthalmology
Background:
- Neurofibromatosis type 1 (NF1) is a genetic disorder associated with increased risk of optic pathway gliomas.
- Chiasmal gliomas in children with NF1 are often monitored without immediate intervention due to perceived low risk of progression.
- The management of chiasmal gliomas remains a topic of debate, particularly regarding the role of radiotherapy.
Observation:
- A 5-year-old boy with a recent NF1 diagnosis developed a chiasmal glioma.
- The child experienced rapid deterioration of visual acuity following the glioma diagnosis.
- Neuroimaging confirmed the presence of a chiasmal glioma.
Findings:
- Despite the common assumption of slow progression, this case demonstrates rapid visual loss in a pediatric chiasmal glioma.
- The patient's vision significantly improved following radiation therapy.
- This outcome challenges the conservative management approach in select cases.
Implications:
- Radiotherapy may be a viable and effective treatment option for pediatric chiasmal gliomas presenting with rapid visual decline.
- Further research is warranted to clarify the indications and long-term efficacy of radiotherapy for NF1-associated chiasmal gliomas.
- This case highlights the importance of vigilant monitoring and individualized treatment strategies for children with NF1 and optic pathway tumors.
Abstract:
Children with neurofibromatosis type 1 (NFI) and chiasmal gliomas are often considered unlikely to experience progressive visual loss. However, this may not be true. We report a 5-year, 6-month-old boy, with recently diagnosed NF1, who had a chiasmal glioma diagnosed after neuroimaging. He subsequently experienced rapid visual acuity loss. His vision improved significantly after irradiation. The controversy surrounding radiotherapy for chiasmal glioma is discussed.
