Question 1638
{"accessible":true,"alternatives":[{"id":8154,"text":"chordoma"},{"id":9553,"text":"epidermoid cyst"},{"id":8155,"text":"meningioma"},{"id":8156,"text":"paraganglioma"},{"id":8157,"text":"schwannoma"}],"archived":false,"correctAlternativeId":8155,"explanation":"\u003cp\u003eThere is an extra-axial lesion on the right lateral side of the prepontine cistern with a wide implantation base in the skull base is identified. Brain MRI was\u0026nbsp;performed for better characterization, showing well-defined borders, lateral tails, wide implantation in right petroclival space, and presenting homogeneous enhancement after the administration of intravenous gadolinium. These findings are highly suggestive of meningioma. This diagnosis was confirmed histologically after surgery.\u003c/p\u003e\u003cp\u003eIntracranial chordoma usually appears in younger patients as a clival lesion, occurring in 1/3 of the cases of sphenoid-occipital synchondrosis.\u003c/p\u003e\u003cp\u003eSchwannoma usually presents a dumbbell morphology, as well as a more heterogeneous MR signal, with cystic-hemorrhagic areas inside. Also, the most frequent location is vestibular.\u003c/p\u003e\u003cp\u003eThe paraganglioma is a more heterogeneous lesion with an appearance classically described as \"salt-and-pepper\", the frequent locations being the carotid body and the jugular-tympanic location.\u003c/p\u003e\u003cp\u003eEpidermoid cysts are almost invariably of near-CSF density and signal intensity.\u0026nbsp;\u003c/p\u003e","id":1638,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/161/mening3_big_gallery.jpeg","imageAttribution":{"kind":"own","user_id":45033,"user_param":"edlomar","user_name":"Edgar Lorente"},"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2803","nextQuestionPath":"/articles/meningioma/questions/1630","relatedArticles":[{"id":1122,"title":"Chordoma","link":"/articles/chordoma?lang=us"},{"id":839,"title":"Vestibular schwannoma","link":"/articles/vestibular-schwannoma?lang=us"},{"id":1293,"title":"Intracranial epidermoid cyst","link":"/articles/intracranial-epidermoid-cyst?lang=us"},{"id":5941,"title":"Jugular paraganglioma","link":"/articles/jugular-paraganglioma?lang=us"}],"alsoUsedIn":[{"id":260,"kind":"Course","title":"Skull base: anatomy and pathology","link":"https://radiopaedia.org/courses/skull-base-anatomy-and-pathology"},{"id":588,"kind":"Course","title":"Radiology lectures for ENT Trainees - page 588","link":"https://radiopaedia.org/courses/radiology-lectures-for-ent-trainees/pages/588"},{"id":588,"kind":"Course","title":"Lectures by Jenny Hoang - page 588","link":"https://radiopaedia.org/courses/lectures-by-jenny-hoang/pages/588"},{"id":588,"kind":"Course","title":"Radiopaedia 2020 - Lectures Only - page 588","link":"https://radiopaedia.org/courses/radiopaedia-2020-exclusive/pages/588"},{"id":588,"kind":"Course","title":"Head \u0026 Neck Lectures - page 588","link":"https://radiopaedia.org/courses/head-neck-lectures/pages/588"},{"id":588,"kind":"Course","title":"2020 Virtual Conference Private Use - page 588","link":"https://radiopaedia.org/courses/2020-virtual-conference-private-use/pages/588"}],"stem":"\u003cp\u003eA 60-year-old man with headaches. CT and MRI were performed. 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/1638"}],"attemptsPercentages":[{"alternativeId":"8156","percentage":2},{"alternativeId":"8154","percentage":6},{"alternativeId":"9553","percentage":1},{"alternativeId":"8157","percentage":14},{"alternativeId":"8155","percentage":77}],"promptToLogin":false,"questionManager":false,"articleId":"meningioma"}