Question 869
{"accessible":false,"alternatives":[{"id":4392,"text":"patients can present with both cortical and subcortical clinical signs"},{"id":4393,"text":"risk factors and etiology are more akin to lacunar infarction than cortical infarction"},{"id":4394,"text":"there is no evidence of acute cortical ischemia, although there may be cortical hypoperfusion evident on perfusion studies"},{"id":4395,"text":"they characteristically have a 'comma' or 'lentiform' shape on neuroimaging"},{"id":4396,"text":"they involve all of the caudate nucleus, putamen, and anterior limb of the internal capsule"}],"archived":false,"correctAlternativeId":4393,"explanation":"\u003cp\u003e\u003ca href=\"/articles/striatocapsular-infarct\"\u003eStriatocapsular infarcts\u003c/a\u003e\u0026nbsp;are \u003ca href=\"/articles/ischaemic-stroke\"\u003eischemic strokes\u003c/a\u003e\u0026nbsp;involving\u0026nbsp;the \u003ca href=\"/articles/caudate-nucleus\"\u003ecaudate nucleus\u003c/a\u003e, \u003ca href=\"/articles/putamen\"\u003eputamen\u003c/a\u003e, and anterior limb of the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/internal-capsule\"\u003einternal capsule\u003c/a\u003e\u0026nbsp;without any involvement of the\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/cortical-bone\"\u003ecortex\u003c/a\u003e. It is thought that they are\u0026nbsp;caused by either a complete or partial proximal\u0026nbsp;\u003ca href=\"https://radiopaedia.org/articles/middle-cerebral-artery\"\u003eMCA\u003c/a\u003e\u0026nbsp;occlusion, and thus have risk factors and etiologies more akin to cortical infarction than \u003ca href=\"/articles/lacunar-infarct\"\u003elacunar infarction\u003c/a\u003e. Even though there is no direct cortical involvement, patients can\u0026nbsp;interestingly present clinically with both cortical and subcortical signs, likely due to hypoperfusion, but not infarction, of the overlying cortex. CT or MRI reveals the infarct that is a classic 'comma' or 'lentiform' shape that is at least 30 mm in length and 10 mm in width, in the basal ganglia, and perfusion studies may further reveal the aforementioned\u0026nbsp;hypoperfusion of the ipsilateral cortex.\u0026nbsp;\u003c/p\u003e","id":869,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/869","nextQuestionPath":null,"relatedArticles":[{"id":13437,"title":"Ischemic stroke","link":"/articles/ischaemic-stroke?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eWhich\u0026nbsp;is \u003cstrong\u003eNOT\u003c/strong\u003e true of striatocapsular infarcts?\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/869"}],"attemptsPercentages":[{"alternativeId":"4394","percentage":19},{"alternativeId":"4392","percentage":17},{"alternativeId":"4393","percentage":29},{"alternativeId":"4395","percentage":8},{"alternativeId":"4396","percentage":27}],"promptToLogin":false,"questionManager":false,"articleId":"striatocapsular-infarct"}