Question 943
{"accessible":false,"alternatives":[{"id":4745,"text":" brain abscess"},{"id":4746,"text":"glioblastoma"},{"id":4747,"text":"hypertrophic pachymeningitis"},{"id":4748,"text":"meningioma"},{"id":4749,"text":"non-arteritic ischemic optic neuropathy"}],"archived":false,"correctAlternativeId":4748,"explanation":"\u003cp\u003e\u003ca href=\"/articles/foster-kennedy-syndrome\"\u003eFoster Kennedy syndrome\u003c/a\u003e\u0026nbsp;describes the clinical syndrome of unilateral optic atrophy with contralateral\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/papilloedema\"\u003epapilledema\u003c/a\u003e\u0026nbsp;caused by a compressive mass lesion.\u0026nbsp;This mass directly compresses one optic nerve, accounting for ipsilateral optic nerve atrophy, and causes chronic raised\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/intracranial-pressure\"\u003eintracranial pressure\u003c/a\u003e\u0026nbsp;resulting in the contralateral\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/papilloedema\"\u003epapilledema\u003c/a\u003e. The most common cause is an \u003ca href=\"/articles/olfactory-fossa\"\u003eolfactory groove\u003c/a\u003e \u003ca href=\"/articles/meningioma\"\u003emeningioma\u003c/a\u003e,\u0026nbsp;however there are\u0026nbsp;myriad other possible causes such as , aneurysms, abscesses and\u0026nbsp;other tumors in similar locations.\u003c/p\u003e\u003cp\u003eThe same constellation of symptoms can also be causes by non-mass lesions, most commonly bilateral sequential\u0026nbsp;non-arteritic ischemic optic neuropathy, among other causes, known as pseudo-Foster Kennedy syndrome. It is thought that pseudo-Foster Kennedy syndrome is likely to be more common than 'true' Foster Kennedy syndrome.\u003c/p\u003e","id":943,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2803","nextQuestionPath":"/articles/meningioma/questions/867","relatedArticles":[{"id":1841,"title":"Papilledema","link":"/articles/papilloedema?lang=us"},{"id":29942,"title":"Optic neuropathy","link":"/articles/optic-neuropathy?lang=us"},{"id":6677,"title":"Cerebral abscess","link":"/articles/cerebral-abscess-1?lang=us"},{"id":4910,"title":"Glioblastoma, IDH-wildtype","link":"/articles/glioblastoma-idh-wildtype?lang=us"},{"id":10824,"title":"Hypertrophic pachymeningitis","link":"/articles/hypertrophic-pachymeningitis?lang=us"},{"id":56664,"title":"Foster Kennedy syndrome","link":"/articles/foster-kennedy-syndrome?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eWhat is the most common etiology of Foster Kennedy syndrome?\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/943"}],"attemptsPercentages":[{"alternativeId":"4749","percentage":16},{"alternativeId":"4747","percentage":14},{"alternativeId":"4745","percentage":7},{"alternativeId":"4746","percentage":12},{"alternativeId":"4748","percentage":50}],"promptToLogin":false,"questionManager":false,"articleId":"meningioma"}