Question 215
{"accessible":false,"alternatives":[{"id":1035,"text":"grade 1"},{"id":1036,"text":"grade 2"},{"id":1037,"text":"grade 3"},{"id":1038,"text":"grade 4"}],"archived":false,"correctAlternativeId":1035,"explanation":"\u003cp\u003eDiffuse axonal injury has a three-part grading system (i.e. there is no grade IV).\u003c/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003egrade I:\u003c/strong\u003e\u0026nbsp;involves grey-white matter interfaces\u003cul\u003e\n\u003cli\u003emost commonly:\u0026nbsp;parasagittal regions of frontal lobes, periventricular temporal lobes\u003c/li\u003e\n\u003cli\u003eless commonly:\u0026nbsp;parietal and occipital lobes, internal and external capsules, and cerebellum\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cstrong\u003egrade II:\u0026nbsp;\u003c/strong\u003einvolves corpus callosum in addition to stage I locations\u003cul\u003e\u003cli\u003emost commonly:\u0026nbsp;posterior body and splenium but does advance anteriorly with increasing severity of injury\u003c/li\u003e\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cstrong\u003egrade III:\u003c/strong\u003e\u0026nbsp;involves brainstem in addition to stage I and II locations\u003cul\u003e\u003cli\u003emost commonly: rostral midbrain, superior cerebellar peduncles, medial lemnisci and corticospinal tracts\u003c/li\u003e\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e","id":215,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1524","nextQuestionPath":null,"relatedArticles":[{"id":13562,"title":"Diffuse axonal injury","link":"/articles/diffuse-axonal-injury?lang=us"}],"alsoUsedIn":[{"id":119,"kind":"Course","title":"Emergency Radiology Course - Melbourne - page 119","link":"https://radiopaedia.org/courses/emergency-radiology-course-melbourne-2020/pages/119"},{"id":119,"kind":"Course","title":"Trauma Radiology Course - Sydney - page 119","link":"https://radiopaedia.org/courses/trauma-radiology-course-sydney-2020/pages/119"},{"id":119,"kind":"Course","title":"Trauma CT Brain Learning Pathway - page 119","link":"https://radiopaedia.org/courses/trauma-ct-brain-learning-pathway/pages/119"}],"stem":"\u003cp\u003eIn a patient diagnosed with diffuse axonal injury, microhemorrhages are seen in the frontal and temporal lobes as well as in the internal capsule. What is the grade of injury?\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/215"}],"attemptsPercentages":[{"alternativeId":"1037","percentage":24},{"alternativeId":"1038","percentage":6},{"alternativeId":"1035","percentage":37},{"alternativeId":"1036","percentage":33}],"promptToLogin":false,"questionManager":false,"articleId":"diffuse-axonal-injury-grading"}