Question 2140
{"accessible":false,"alternatives":[{"id":10628,"text":"neurofibromatosis type I"},{"id":10629,"text":"Sturge-Weber syndrome"},{"id":10630,"text":"tuberous sclerosis"},{"id":10631,"text":"von Hippel Lindau disease"},{"id":10632,"text":"Wyburn-Mason syndrome"}],"archived":false,"correctAlternativeId":10628,"explanation":"\u003cp\u003eThe child has an optic pathway glioma and nearly all anterior optic pathway gliomas are associated with neurofibromatosis type I. The others are all neurocutaneous syndromes, but none are associated with optic pathway tumors. Wyburn-Mason syndrome is another rare phakomatosis with associated visual pathway and orbital vascular malformations.\u003c/p\u003e","id":2140,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2140","nextQuestionPath":"/articles/neurofibromatosis-type-1-cns-manifestations-1/questions/2066","relatedArticles":[{"id":2224,"title":"Tuberous sclerosis","link":"/articles/tuberous-sclerosis?lang=us"},{"id":2296,"title":"Wyburn-Mason syndrome","link":"/articles/wyburn-mason-syndrome?lang=us"},{"id":1725,"title":"Neurofibromatosis type 1","link":"/articles/neurofibromatosis-type-1?lang=us"},{"id":8210,"title":"Sturge-Weber syndrome","link":"/articles/sturge-weber-syndrome-1?lang=us"},{"id":6665,"title":"Optic pathway glioma","link":"/articles/optic-pathway-glioma?lang=us"},{"id":9186,"title":"Von Hippel-Lindau disease","link":"/articles/von-hippel-lindau-disease-5?lang=us"}],"alsoUsedIn":[{"id":990,"kind":"Course","title":"2021 Virtual Conference Private Use - page 990","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/990"},{"id":990,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 990","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/990"},{"id":990,"kind":"Course","title":"2022 Virtual Conference Private Use - page 990","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/990"},{"id":970,"kind":"RestrictedPage","title":"Page 970 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/970"},{"id":955,"kind":"RestrictedPage","title":"Page 955 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/955"},{"id":1,"kind":"LiveSchedule","title":"1","link":"https://radiopaedia.org/admin/live_schedules/1"},{"id":25,"kind":"LiveSchedule","title":"25","link":"https://radiopaedia.org/admin/live_schedules/25"},{"id":945,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 945","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/945"},{"id":945,"kind":"Course","title":"2021 Virtual Conference Private Use - page 945","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/945"},{"id":945,"kind":"Course","title":"Paediatric Lectures - page 945","link":"https://radiopaedia.org/courses/paediatric-lectures/pages/945"}],"stem":"\u003cp\u003eA 12-year-old boy presents with reduced visual acuity and during workup has an MRI. The right optic nerve is expanded all the way back to the chiasm which is also enlarged. Given the likely diagnosis, what is the most likely underlying condition?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/2140"}],"attemptsPercentages":[{"alternativeId":"10628","percentage":89},{"alternativeId":"10629","percentage":2},{"alternativeId":"10631","percentage":4},{"alternativeId":"10632","percentage":2},{"alternativeId":"10630","percentage":3}],"promptToLogin":false,"questionManager":false,"articleId":"neurofibromatosis-type-1-cns-manifestations"}