可逆性であった後天性振子様眼球運動の２症

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  • Reversible Acquired Pendular Oscillation in Two Stroke Patients.

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Two patients manifested reversible acquired pendular eye oscillations after brainstem stroke. Case 1 was a 52-year-old male who was referred to us 5 weeks after an acute event. The CT scan on the day of onset showed severe pontine hemorrhage. Neurotological examination revealed vertical oscillopsia and continuous pendular eye oscillations in the vertical plane, associated with bilateral horizontal gaze palsies. The eye movements had a frequency of about 2 Hz and an amplitude of 7 to 12 degrees. The oscillations lasted more than 2 years. Case 2, a 63-year-old male with blurred vision and dysequilibrium was referred to us. Repeated MRI revealed a venous angioma in his pon-to-medullary junction and no significant interval changes. He had rotary pendular eye oscillations in the frontal plane, associated with synchronous and rhythmic oscillations of the palate. The eye and palate movements had a frequency of about 2.5 Hz and lasted for more than 5 years. Interestingly, although the prognosis has been reported to be poor for the cessation of acquired pendular eye oscillations and diminution of oscillopsia, our patients showed marked improvement 4 (case 1) and 7 (case 2) years after their strokes.

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