Question 524
{"accessible":false,"alternatives":[{"id":2628,"text":"central neurocytoma"},{"id":2629,"text":"choroid plexus papilloma"},{"id":2630,"text":"ependymoma"},{"id":2631,"text":"subependymal giant cell astrocytoma"},{"id":2632,"text":"xanthogranuloma"}],"archived":false,"correctAlternativeId":2629,"explanation":"\u003cp\u003eUnlike most other brain tumors, which are more common in the posterior fossa in children and supratentorial compartment in adults, the relationship is reversed for choroid plexus papillomas:\u003c/p\u003e\u003cul\u003e\n\u003cli\u003eadults: most often (70%) occur in the fourth ventricle\u003c/li\u003e\n\u003cli\u003echildren: most often occur in the lateral ventricles, with a predilection for the trigone\u003c/li\u003e\n\u003c/ul\u003e\u003cp\u003eCentral neurocytomas are in the body of the lateral ventricle, usually in adults. Ependymomas are usually in the posterior fossa. Xanthogranulomas are incidental and found in the elderly. Subependymal giant cell astrocytomas are found in older children or adults near the foramina of Monro.\u0026nbsp;\u003c/p\u003e","id":524,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2383","nextQuestionPath":"/articles/ependymoma/questions/523","relatedArticles":[{"id":4145,"title":"Intraventricular neoplasms and lesions","link":"/articles/intraventricular-neoplasms-and-lesions?lang=us"},{"id":8627,"title":"Choroid plexus papilloma","link":"/articles/choroid-plexus-papilloma-1?lang=us"},{"id":1076,"title":"Central neurocytoma","link":"/articles/central-neurocytoma?lang=us"},{"id":5888,"title":"Subependymal giant cell astrocytoma","link":"/articles/subependymal-giant-cell-astrocytoma?lang=us"},{"id":14254,"title":"Choroid plexus xanthogranuloma","link":"/articles/choroid-plexus-xanthogranuloma?lang=us"},{"id":21040,"title":"Intraventricular masses (an approach)","link":"/articles/intraventricular-masses-an-approach-1?lang=us"}],"alsoUsedIn":[{"id":1175,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1175","link":"https://radiopaedia.org/courses/adult-neuroradiology-review-course/pages/1175"},{"id":1175,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1175","link":"https://radiopaedia.org/courses/adult-brain-mri-review-course-2015-online-video/pages/1175"},{"id":1175,"kind":"Course","title":"Content Previews - page 1175","link":"https://radiopaedia.org/courses/previews/pages/1175"}],"stem":"\u003cp\u003eA 4 month-old girl presents with a large mass within the trigone of the lateral ventricle, with associated hydrocephalus. Which of the following 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/524"}],"attemptsPercentages":[{"alternativeId":"2631","percentage":6},{"alternativeId":"2628","percentage":4},{"alternativeId":"2630","percentage":10},{"alternativeId":"2632","percentage":3},{"alternativeId":"2629","percentage":77}],"promptToLogin":false,"questionManager":false,"articleId":"ependymoma"}