Question 3108
{"accessible":false,"alternatives":[{"id":15074,"text":"ischemic neuropathy"},{"id":15075,"text":"MOG antibody-related disease"},{"id":15076,"text":"multiple sclerosis"},{"id":15077,"text":"neuromyelitis optica spectrum disorder (anti-AQP4 positive)"},{"id":15078,"text":"sarcoidosis"}],"archived":false,"correctAlternativeId":15077,"explanation":"\u003cp\u003eThe classical distribution for neuromyelitis optica spectrum disorder (NMOSD) is bilateral, long segment posterior optic nerve involvement. MOGAD is more likely to involve the anterior optic nerves. MS is more likely to demonstrate short segment and unilateral involvement. Ischemic neuropathy is unlikely to be symmetrical and posterior. Sarcoidosis is unlikely to solely involve the optic nerve within the orbit.\u003c/p\u003e","id":3108,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/3108","nextQuestionPath":"/articles/multiple-sclerosis/questions/2590","relatedArticles":[{"id":10928,"title":"Neurosarcoidosis","link":"/articles/neurosarcoidosis?lang=us"},{"id":1218,"title":"Neuromyelitis optica spectrum disorder","link":"/articles/neuromyelitis-optica-spectrum-disorder?lang=us"},{"id":62038,"title":"Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD)","link":"/articles/myelin-oligodendrocyte-glycoprotein-antibody-associated-disease-mogad?lang=us"}],"alsoUsedIn":[{"id":2156,"kind":"Course","title":"2024 Virtual Conference Private Use - page 2156","link":"https://radiopaedia.org/courses/2024-virtual-conference-private-use/pages/2156"}],"stem":"\u003cp\u003eA 40 year old woman presents with optic neuritis. Her MRI demonstrates bilateral optic nerve signal abnormality involving the optic chiasm and prechiasmatic segments. The orbits are otherwise normal. What is the most likely diagnosis?\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/3108"}],"attemptsPercentages":[{"alternativeId":"15077","percentage":75},{"alternativeId":"15076","percentage":25},{"alternativeId":"15074","percentage":0},{"alternativeId":"15075","percentage":0},{"alternativeId":"15078","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"multiple-sclerosis"}