We report a case of acute pseudo–progressive supranuclear palsy caused by a paramedian thalamopeduncular infarct. The patient presented with a sudden vertical gaze palsy, staring look, and postural instability, mimicking progressive supranuclear palsy. Magnetic resonance imaging showed an acute medial thalamic infarct extending into the midbrain, confirming a vascular etiology.
IijimaM, HirataA, TadanoY, KamakuraK, NagataN.A case of vertical gaze palsy associated with a unilateral infarct in the thalamo-mesencephalic junction on MR imaging. Rinsho Shinkeigaku. 1994;34(4):356–360.
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LarkJM, AlbersGW.Vertical gaze palsies from medial thalamic infarctions without midbrain involvement. Stroke. 1995;26(8):1467–1470.