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April 08, 2008; 70 (15) Resident and Fellow Section

Teaching NeuroImage: Convergence spasm associated with midbrain compression by cerebral aneurysm

Konrad P. Weber, Matthew J. Thurtell, G. Michael Halmagyi
First published May 20, 2008, DOI: https://doi.org/10.1212/01.wnl.0000308952.85042.bf
Konrad P. Weber
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Matthew J. Thurtell
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G. Michael Halmagyi
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Teaching NeuroImage: Convergence spasm associated with midbrain compression by cerebral aneurysm
Konrad P. Weber, Matthew J. Thurtell, G. Michael Halmagyi
Neurology Apr 2008, 70 (15) e49-e50; DOI: 10.1212/01.wnl.0000308952.85042.bf

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A 72-year-old woman presented with intermittent diplopia. She had a history of vascular disease, but no history of stroke or psychiatric disturbance. On examination, she developed convergence spasm with associated miosis following fixation on near targets and during horizontal smooth pursuit (video, figure 1). The spasms were terminated with a blink. She had no ptosis, her eye movements were normal in range, and her pupils were equal in size with normal reactions to light. Neurologic examination was otherwise unremarkable. Five years prior to her current presentation, a left-sided terminal carotid artery aneurysm had been incidentally detected. The …

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