Question 79
{"accessible":false,"alternatives":[{"id":405,"text":"choroid plexus papilloma"},{"id":406,"text":"glioblastoma"},{"id":407,"text":"hemangioblastoma"},{"id":408,"text":"medulloblastoma"},{"id":409,"text":"pilocytic astroctyoma"}],"archived":false,"correctAlternativeId":407,"explanation":"\u003cp\u003eHemangioblastomas typically occur in\u0026nbsp;young adults (peak incidence is around 30-60 years of age, but earlier in patients with von Hippel Lindau), and although they are the most common posterior fossa mass in a young adult, they are nonetheless uncommon in absolute terms, accounting for only 1-2.5% of all intracranial tumors and approximately 10% of all posterior fossa tumors.\u0026nbsp;\u003c/p\u003e","id":79,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1078","nextQuestionPath":"/articles/haemangioblastoma-central-nervous-system-2/questions/78","relatedArticles":[{"id":4910,"title":"Glioblastoma, IDH-wildtype","link":"/articles/glioblastoma-idh-wildtype?lang=us"},{"id":5335,"title":"Medulloblastoma","link":"/articles/medulloblastoma?lang=us"},{"id":8627,"title":"Choroid plexus papilloma","link":"/articles/choroid-plexus-papilloma-1?lang=us"},{"id":1876,"title":"Pilocytic astrocytoma","link":"/articles/pilocytic-astrocytoma?lang=us"}],"alsoUsedIn":[{"id":184,"kind":"Course","title":"Cases in Radiology: Brain - page 184","link":"https://radiopaedia.org/courses/cases-in-radiology-brain/pages/184"}],"stem":"\u003cp\u003eWhich of the following is the most common primary tumor found in the posterior fossa of young to middle aged adults?\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/79"}],"attemptsPercentages":[{"alternativeId":"406","percentage":2},{"alternativeId":"405","percentage":9},{"alternativeId":"408","percentage":17},{"alternativeId":"409","percentage":18},{"alternativeId":"407","percentage":54}],"promptToLogin":false,"questionManager":false,"articleId":"hemangioblastoma-central-nervous-system"}