Question 580
{"accessible":false,"alternatives":[{"id":2904,"text":"idiopathic"},{"id":2905,"text":"secondary to blood dyscrasias (e.g. sickle cell disease)"},{"id":2906,"text":"secondary to connective tissue diseases (e.g. antiphospholipid syndrome)"},{"id":2907,"text":"secondary to infection (e.g. varicella)"},{"id":2908,"text":"secondary to phakomatoses (e.g. neurofibromatosis type 1)"},{"id":2909,"text":"secondary to radiation"}],"archived":false,"correctAlternativeId":2904,"explanation":"\u003cp\u003eThe term \u003cstrong\u003emoyamoya disease\u003c/strong\u003e should be reserved for\u0026nbsp;an idiopathic, sometimes familial, condition, which leads to characteristic intracranial vascular changes. Numerous entities have been described which mimic the appearance, in which case the term \"moyamoya phenomenon\", \"moyamoya syndrome\" or \"moyamoya pattern\" is used.\u0026nbsp;\u003c/p\u003e","id":580,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1005","nextQuestionPath":null,"relatedArticles":[{"id":1693,"title":"Moyamoya disease","link":"/articles/moyamoya-disease-1?lang=us"}],"alsoUsedIn":[{"id":784,"kind":"Course","title":"Stroke Learning Pathway - page 784","link":"https://radiopaedia.org/courses/stroke-learning-pathway/pages/784"},{"id":2121,"kind":"Course","title":"Stroke Learning Pathway - peer review - page 2121","link":"https://radiopaedia.org/courses/stroke-learning-pathway-peer-review/pages/2121"}],"stem":"\u003cp\u003eMoyamoya disease is usually...\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/580"}],"attemptsPercentages":[{"alternativeId":"2907","percentage":2},{"alternativeId":"2904","percentage":85},{"alternativeId":"2906","percentage":6},{"alternativeId":"2905","percentage":2},{"alternativeId":"2908","percentage":3},{"alternativeId":"2909","percentage":2}],"promptToLogin":false,"questionManager":false,"articleId":"moyamoya-syndrome"}