Mr. Middleton, a 63-year-old male, was hospitalized 6 weeks…
Mr. Middleton, a 63-year-old male, was hospitalized 6 weeks after a left carotid endarterectomy at another institution. Postoperative difficulties included speech problems and right hemiparesis. Neurologic examination noted right hemiparesis, dysarthria, and non-fluent aphasia. Speech-language evaluation revealed mild comprehension difficulty and unintelligible writing because of right hemiparesis. His speech was telegraphic and characterized by revisions, hesitancy, and repetitions. He presented with reduced loudness, mild hoarseness, and mild articulatory distortions. A right central facial weakness was present. What do you suspect is the etiology of his condition?