Question 2127
{"accessible":true,"alternatives":[{"id":10564,"text":"type I"},{"id":10565,"text":"type IIa"},{"id":10566,"text":"type IIb"},{"id":10567,"text":"type III"}],"archived":false,"correctAlternativeId":10566,"explanation":"\u003cp\u003eThe Blumcke system is used for the classification of focal cortical dysplasias.\u003c/p\u003e\u003cp\u003eType II are the commonest finding\u0026nbsp;with cortical thickening, cortical hyperintensity and marked blurring of the grey/white matter junction. The distinction of type IIa and IIb depends on the presence of balloon cells, which is a histological diagnosis, however studies have demonstrated that when the transmantle sign is present this is a good discriminator for type IIb and is more commonly diagnosed on imaging.\u003c/p\u003e\u003cp\u003eType I dysplasias have blurred GM/WM junctions and usually reduced white matter volume, with type III dysplasias are associated with other abnormalities (medial temporal sclerosis, trauma, tumors).\u003c/p\u003e","id":2127,"imageUrl":"https://prod-images-static.radiopaedia.org/images/16165395/67dd41003e8fc0f8762a1f3eb141aa_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":39848},"imageAttributionCaseInfo":{"title":"Focal cortical dysplasia","contributor_name":"Ahmed Abdrabou","contributor_param":"drabdrabou","case_rid":39848,"case_param":"focal-cortical-dysplasia-5"},"firstQuestionPath":"/questions/2127","nextQuestionPath":null,"relatedArticles":[{"id":37453,"title":"Transmantle sign (brain)","link":"/articles/transmantle-sign-brain?lang=us"}],"alsoUsedIn":[{"id":987,"kind":"Course","title":"2021 Virtual Conference Private Use - page 987","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/987"},{"id":987,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 987","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/987"},{"id":987,"kind":"Course","title":"2022 Virtual Conference Private Use - page 987","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/987"},{"id":970,"kind":"RestrictedPage","title":"Page 970 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/970"},{"id":955,"kind":"RestrictedPage","title":"Page 955 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/955"},{"id":1,"kind":"LiveSchedule","title":"1","link":"https://radiopaedia.org/admin/live_schedules/1"},{"id":20,"kind":"LiveSchedule","title":"20","link":"https://radiopaedia.org/admin/live_schedules/20"},{"id":916,"kind":"Course","title":"2021 Virtual Conference Private Use - page 916","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/916"},{"id":916,"kind":"Course","title":"Neuroradiology Lectures - page 916","link":"https://radiopaedia.org/courses/neuroradiology-lectures/pages/916"},{"id":916,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 916","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/916"},{"id":916,"kind":"Course","title":"New test course - page 916","link":"https://radiopaedia.org/courses/new-test-course/pages/916"},{"id":1174,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1174","link":"https://radiopaedia.org/courses/adult-neuroradiology-review-course/pages/1174"},{"id":1174,"kind":"Course","title":"Adult Neuroradiology Review Course - page 1174","link":"https://radiopaedia.org/courses/adult-brain-mri-review-course-2015-online-video/pages/1174"}],"stem":"\u003cp\u003eA 16-year-old woman has MRI findings compatible with right parietal focal cortical dysplasia. A hyperintense FLAIR tract is seen between the abnormal cortex and the ventricle. What type of FCD is this in the Blumcke classification system?\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/2127"}],"attemptsPercentages":[{"alternativeId":"10567","percentage":9},{"alternativeId":"10565","percentage":46},{"alternativeId":"10564","percentage":11},{"alternativeId":"10566","percentage":33}],"promptToLogin":false,"questionManager":false,"articleId":"blumcke-classification-of-focal-cortical-dysplasia"}