Question 502
{"accessible":true,"alternatives":[{"id":2515,"text":"choroid plexus papilloma"},{"id":2516,"text":"ependymoma"},{"id":2517,"text":"glioblastoma"},{"id":2518,"text":"meningioma"},{"id":2519,"text":"primary CNS lymphoma"}],"archived":false,"correctAlternativeId":2518,"explanation":"\u003cp\u003eA well circumscribed\u0026nbsp;rounded lesion in the trigone with vivid homogeneous enhancement is characteristic of an intraventricular meningioma.\u0026nbsp;\u003c/p\u003e\u003cp\u003eChoroid plexus papillomas are usually multilobulated, and in adults more common in the fourth ventricle. Ependymoma is also usually in the fourth ventricle and is also lobulated, and usually less vividly enhancing. Both primary CNS lymphoma and glioblastoma are parenchymal tumors rather than intraventricular tumors.\u0026nbsp;\u003c/p\u003e","id":502,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/763/test-158_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":51544},"imageAttributionCaseInfo":{"title":"Intraventricular meningioma","contributor_name":"Frank Gaillard","contributor_param":"frank","case_rid":51544,"case_param":"intraventricular-meningioma-8"},"firstQuestionPath":"/questions/2132","nextQuestionPath":"/articles/lymphomas-of-the-central-nervous-system/questions/466","relatedArticles":[{"id":1290,"title":"Ependymoma","link":"/articles/ependymoma?lang=us"},{"id":8627,"title":"Choroid plexus papilloma","link":"/articles/choroid-plexus-papilloma-1?lang=us"},{"id":4145,"title":"Intraventricular neoplasms and lesions","link":"/articles/intraventricular-neoplasms-and-lesions?lang=us"},{"id":1523,"title":"Intraventricular meningioma","link":"/articles/intraventricular-meningioma?lang=us"},{"id":4910,"title":"Glioblastoma, IDH-wildtype","link":"/articles/glioblastoma-idh-wildtype?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eA 35-year-old woman, previously well, developed persistent headaches and was imaged with a contrast-enhanced MRI. 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/502"}],"attemptsPercentages":[{"alternativeId":"2519","percentage":6},{"alternativeId":"2516","percentage":8},{"alternativeId":"2515","percentage":17},{"alternativeId":"2518","percentage":65},{"alternativeId":"2517","percentage":3}],"promptToLogin":false,"questionManager":false,"articleId":"lymphomas-of-the-central-nervous-system"}