Question 1729
{"accessible":true,"alternatives":[{"id":8593,"text":"anterior choroidal artery"},{"id":8592,"text":"artery of Percheron"},{"id":8594,"text":"posterior cerebral artery (PCA)"},{"id":8595,"text":"superior cerebellar artery"},{"id":8591,"text":"top of basilar artery occlusion"}],"archived":false,"correctAlternativeId":8592,"explanation":"\u003cp\u003eAlthough occlusion of the basilar tip can lead to similar infarction it is usually accompanied by infarcts, perhaps small and punctate, also in the posterior cerebral artery and superior cerebellar artery territories. As such the best answer in the setting of \"single vessel occlusion\" is the \u003ca href=\"/articles/artery-of-percheron\" title=\"Artery of Percheron\"\u003eartery of Percheron\u003c/a\u003e,\u0026nbsp;a rare variant of the posterior cerebral circulation characterised by a solitary arterial trunk that supplies blood to the paramedian thalami and the rostral midbrain bilaterally. Occlusion leads to isolated bilateral thalamic and mesencephalic infarctions. Clinically patients are often obtunded, comatose, or agitated, with associated hemiplegia or hemisensory loss.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":1729,"imageUrl":"https://prod-images-static.radiopaedia.org/multiple_choice_questions/226/Square-MCQ-1024x1024.010_big_gallery.jpeg","imageAttribution":{"kind":"case","rID":28679},"imageAttributionCaseInfo":{"title":"Artery of Percheron infarction","contributor_name":"Naushad Ali Basheer Ahamed","contributor_param":"nashlib","case_rid":28679,"case_param":"artery-of-percheron-infarction-4"},"firstQuestionPath":"/questions/1779","nextQuestionPath":"/articles/brain-arterial-vascular-territories/questions/1728","relatedArticles":[{"id":13437,"title":"Ischaemic stroke","link":"/articles/ischaemic-stroke?lang=gb"}],"alsoUsedIn":[{"id":763,"kind":"Course","title":"Stroke Learning Pathway - page 763","link":"https://radiopaedia.org/courses/stroke-learning-pathway/pages/763"},{"id":763,"kind":"Course","title":"Content Previews - page 763","link":"https://radiopaedia.org/courses/previews/pages/763"},{"id":2100,"kind":"Course","title":"Stroke Learning Pathway - peer review - page 2100","link":"https://radiopaedia.org/courses/stroke-learning-pathway-peer-review/pages/2100"}],"stem":"\u003cp\u003eWhat single vessel occlusion can lead to an isolated infarction in this distribution?\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/1729"}],"attemptsPercentages":[{"alternativeId":"8594","percentage":5},{"alternativeId":"8593","percentage":5},{"alternativeId":"8595","percentage":2},{"alternativeId":"8591","percentage":18},{"alternativeId":"8592","percentage":70}],"promptToLogin":false,"questionManager":false,"articleId":"brain-arterial-vascular-territories"}