Question 523
{"accessible":true,"alternatives":[{"id":2623,"text":"aqueduct stenosis"},{"id":2624,"text":"choroid plexus papilloma"},{"id":2625,"text":"ependymoma"},{"id":2626,"text":"germinal matrix hemorrhage"},{"id":2627,"text":"medulloblastoma"}],"archived":false,"correctAlternativeId":2624,"explanation":"\u003cp\u003eNote the large lobulated echogenic mass in the trigone of the left lateral ventricle.\u003c/p\u003e\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\u003e\u003cp\u003eadults: most often (70%) occur in the fourth ventricle\u003c/p\u003e\u003c/li\u003e\n\u003cli\u003e\u003cp\u003echildren: most often occur in the lateral ventricles, with a predilection for the trigone\u003c/p\u003e\u003c/li\u003e\n\u003c/ul\u003e","id":523,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/759/test-158_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":21121},"imageAttributionCaseInfo":{"title":"Choroid plexus carcinoma","contributor_name":"Frank Gaillard","contributor_param":"frank","case_rid":21121,"case_param":"choroid-plexus-carcinoma-1"},"firstQuestionPath":"/questions/2383","nextQuestionPath":"/articles/ependymoma/questions/517","relatedArticles":[{"id":5335,"title":"Medulloblastoma","link":"/articles/medulloblastoma?lang=us"},{"id":19487,"title":"Hydrocephalus","link":"/articles/hydrocephalus?lang=us"},{"id":4145,"title":"Intraventricular neoplasms and lesions","link":"/articles/intraventricular-neoplasms-and-lesions?lang=us"},{"id":928,"title":"Aqueduct stenosis","link":"/articles/aqueduct-stenosis?lang=us"},{"id":8627,"title":"Choroid plexus papilloma","link":"/articles/choroid-plexus-papilloma-1?lang=us"},{"id":21040,"title":"Intraventricular masses (an approach)","link":"/articles/intraventricular-masses-an-approach-1?lang=us"},{"id":7600,"title":"Germinal matrix hemorrhage (grading)","link":"/articles/germinal-matrix-haemorrhage-grading-2?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eThis 3-month old boy presents with increasing head circumference. He underwent a cranial ultrasound. What is the most likely diagnosis?\u0026nbsp;\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/523"}],"attemptsPercentages":[{"alternativeId":"2626","percentage":17},{"alternativeId":"2625","percentage":5},{"alternativeId":"2624","percentage":62},{"alternativeId":"2627","percentage":2},{"alternativeId":"2623","percentage":14}],"promptToLogin":false,"questionManager":false,"articleId":"ependymoma"}