Question 2314
{"accessible":true,"alternatives":[{"id":11448,"text":"the mass displaces adjacent brain parenchyma"},{"id":11449,"text":"the mass is surrounded by brain parenchyma"},{"id":11447,"text":"the presence of cytotoxic edema"},{"id":11446,"text":"the presence of vasogenic edema"}],"archived":false,"correctAlternativeId":11449,"explanation":"\u003cp\u003eThis mass is intra-axial because it is completely surrounded by brain parenchyma. Both intra- and extra-axial masses may displace brain parenchyma and have vasogenic edema. Cytotoxic edema is more characteristic of ischemia.\u003c/p\u003e","id":2314,"imageUrl":"https://prod-images-static.radiopaedia.org/images/7256556/508e52f5384307ad9ba438c71e5f03_big_gallery.jpg","imageAttribution":{"kind":"case","rID":29493},"imageAttributionCaseInfo":{"title":"Glioblastoma NOS","contributor_name":"Jack Ren","contributor_param":"rendaxing","case_rid":29493,"case_param":"glioblastoma-nos-12"},"firstQuestionPath":"/questions/2314","nextQuestionPath":"/articles/extra-axial-1/questions/2313","relatedArticles":[{"id":24453,"title":"Cytotoxic cerebral edema","link":"/articles/cytotoxic-cerebral-oedema?lang=us"},{"id":24486,"title":"Vasogenic cerebral edema","link":"/articles/vasogenic-cerebral-oedema?lang=us"},{"id":7963,"title":"Intra-axial","link":"/articles/intra-axial-2?lang=us"}],"alsoUsedIn":[{"id":1377,"kind":"Course","title":"Head CT: Graphic Novel - page 1377","link":"https://radiopaedia.org/courses/head-ct-graphic-novel/pages/1377"}],"stem":"\u003cp\u003eWhat observation is most important in correctly classifying this mass as intra-axial?\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/2314"}],"attemptsPercentages":[{"alternativeId":"11449","percentage":51},{"alternativeId":"11447","percentage":7},{"alternativeId":"11446","percentage":36},{"alternativeId":"11448","percentage":6}],"promptToLogin":false,"questionManager":false,"articleId":"extra-axial"}