Question 509
{"accessible":false,"alternatives":[{"id":2551,"text":"Erdheim-Chester disease"},{"id":2552,"text":"fibrous meningioma"},{"id":2553,"text":"hemangiopericytoma"},{"id":2554,"text":"primary dural lymphoma"},{"id":2555,"text":"Rosai-Dorfman disease"}],"archived":false,"correctAlternativeId":2553,"explanation":"\u003cp\u003eIn the 5th Edtion (2021)\u0026nbsp;update to the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/who-classification-of-cns-tumours-1\"\u003eWHO classification of CNS tumors\u003c/a\u003e, the term hemangiopericytoma has been retired and folded into\u0026nbsp;solitary fibrous tumors of the dura, now\u0026nbsp;considered to be one entity with variable morphology.\u0026nbsp;\u003c/p\u003e","id":509,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2804","nextQuestionPath":null,"relatedArticles":[{"id":2277,"title":"WHO classification of CNS tumors","link":"/articles/who-classification-of-cns-tumours-1?lang=us"},{"id":1437,"title":"Meningeal hemangiopericytoma (historical)","link":"/articles/meningeal-haemangiopericytoma-historical?lang=us"}],"alsoUsedIn":[{"id":1167,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1167","link":"https://radiopaedia.org/courses/adult-neuroradiology-review-course/pages/1167"},{"id":1167,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1167","link":"https://radiopaedia.org/courses/adult-brain-mri-review-course-2015-online-video/pages/1167"}],"stem":"\u003cp\u003eSolitary fibrous tumors of the dura are considered to encompass which of the following entities?\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/509"}],"attemptsPercentages":[{"alternativeId":"2553","percentage":68},{"alternativeId":"2555","percentage":2},{"alternativeId":"2551","percentage":18},{"alternativeId":"2552","percentage":11},{"alternativeId":"2554","percentage":1}],"promptToLogin":false,"questionManager":false,"articleId":"solitary-fibrous-tumor-of-the-dura"}