]> 2026-07-31T09:41:28+00:00 WBR0583 0 en A This represents the anterior cerebral artery (ACA). The ACA supplies the medial portions of the frontal lobes and superiomedial parietal lobes. ACA strokes usually present with contralateral lower extremity sensory-motor deficit. B This refers to the right posterior cerebral artery (PCA) whose occlusion can explain the symptoms in our patient. PCA strokes usually cause contralateral homonymous hemianopia with macular sparing. C This refers to the middle cerebral artery (MCA). Occlusion of the MCA in the dominant hemisphere leads to contralateral facial and upper extremity sensory-motor deficits. Visual field defects are rare in MCA strokes. D This refers to the right posterior inferior cerebellar artery (PICA). PICA lesions present with lateral medullary syndrome characterized by crossed sensory deficits, vertigo, ataxia, ipsilateral Horner's syndrome, and nucleus ambiguus symptoms including dysphagia, hoarsness, and loss of gag reflex. E This refers to the left posterior cerebral artery (PCA) whose occlusion would cause a similar syndrome seen in our patient but localized to the right. PCA strokes usually cause contralateral homonymous hemianopia with macular sparing. Anatomy Pathophysiology Pharmacology B Neurology 2020-10-28T01:02:46Z 2459150.543588 WBR0583