Left posterior cerebral artery occlusion presents with all of the following except:

• A. Reduced Memory
• B. Speech Difficulties
• C. Visual Deficits
• D. Reduced Comprehension

Answer: (B)

Left PCA occlusion affects brain regions that handle visual processing and memory—the occipital lobe and the medial temporal structures (including the hippocampus). That explains why visual deficits, such as contralateral visual field loss, and memory problems are common after a left PCA stroke. In a dominant (often left) hemisphere, there can also be reading or semantic processing difficulties, which relates to comprehension in broader cognitive terms.

Speech production and language skills, however, are primarily governed by the left middle cerebral artery territory, where Broca’s and related language areas reside. A PCA stroke does not typically disrupt these language centers, so speech difficulties are not a characteristic feature of left PCA occlusion.