Unilateral third nerve palsy and somnolent mutism.
A 64-year-old man developed unilateral third nerve palsy and somnolent mutism. Computed tomography (CT) revealed a small unilateral midbrain infarct. Previous reports of somnolent mutism placed the lesion in both sides of the midbrain tegmentum, usually extending into the thalamus. The unilateral third nerve palsy, and high-resolution 4-mm contiguous tomographic sections of the brainstem, helped localize the lesion. To our knowledge, this is the first CT clinical report of somnolent mutism induced by unilateral midbrain infarct.
D002544:Cerebral Infarction / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008636:Mesencephalon / Q000098:blood supply*; D008875:Middle Aged; D009155:Mutism / Q000209:etiology*; D009886:Ophthalmoplegia / Q000209:etiology*; D012893:Sleep Wake Disorders / Q000209:etiology*; D014057:Tomography, X-Ray Computed