| One-and-a-half syndrome in pontine infarcts: MRI correlates. | |
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MedLine Citation:
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PMID: 10525768 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The one-and-a-half syndrome is characterised by a lateral gaze palsy in one direction and internuclear ophthalmoplegia in the other. It is due to a unilateral lesion of the dorsal pontine tegmentum, involving the ipsilateral paramedian pontine reticular formation, internuclear fibres of the ipsilateral medical longitudinal fasciculus and, usually, the abducens nucleus. The main causes of this rare syndrome are stroke and multiple sclerosis. Few cases have been reported since the introduction of MRI. Our aim was to examine clinicoradiological correlations in six patients with a one-and-a-half syndrome due to a stroke. Ophthalmological symptoms were diplopia, oscillopsia or blurred vision. Four patients had an associated facial nerve palsy, three a hemiparesis and one a unilateral hemihypoaesthesia. MRI revealed an infarct in the pons in all patients. The cause of the infarct was a basilar artery dissection in one patient, bilateral vertebral artery dissection in a second and unknown in the other four. All patients recovered within 2 days to 8 weeks. This study showed a good correlation between the site of the lesion (superior, inferior or extensive pontine ischaemia) and clinical deficits. |
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Authors:
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J de Seze; C Lucas; X Leclerc; A Sahli; P Vermersch; D Leys |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Neuroradiology Volume: 41 ISSN: 0028-3940 ISO Abbreviation: Neuroradiology Publication Date: 1999 Sep |
Date Detail:
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Created Date: 1999-11-30 Completed Date: 1999-11-30 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1302751 Medline TA: Neuroradiology Country: GERMANY |
Other Details:
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Languages: eng Pagination: 666-9 Citation Subset: IM |
Affiliation:
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Department of Neurology, Stroke Unit, Hopital R. Salengro, CHRU de Lille, F-59037 Lille Cedex, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Brain Stem Infarctions / diagnosis*, physiopathology Dominance, Cerebral / physiology Female Humans Magnetic Resonance Imaging* Male Middle Aged Ophthalmoplegia / diagnosis, physiopathology Pons* / pathology Syndrome |
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