| Trochlear palsies caused by isolated trochlear schwannomas. | |
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MedLine Citation:
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PMID: 20843184 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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PURPOSE: To describe clinical features and management of 4 patients suffering from unilateral superior oblique palsies due to MRI-documented trochlear nerve schwannomas. METHODS: Chart reviews of 4 patients seen at the departments of ophthalmogy and neurology at the University of Mainz. RESULTS: All four patients were male, aged 36 to 72 years at initial presentation. None suffered from neurofibromatosis. The history of double vision prior presentation was 9 months to 13 years, follow-up time was 9 to 156 months. Two patients didn't receive any intervention: one remained stable over the follow-up time of 9 months. In patient #2, fourth nerve palsy was diagnosed 13 years prior to confirmation of a trochlear schwannoma by high-resolution MRI. In the third patient disturbing diplopia and head tilt were sufficiently corrected by strabismus surgery (combined oblique muscle surgery). The fourth patient had received stereotactic radiotherapy of an 8 mm schwannoma. He remained unchanged in the orthoptic measurements for 3,5 years. None of these patients developed any additional symptoms or signs of further cranial nerve or central nervous system involvement. CONCLUSION: A trochlear nerve schwannoma is a possible cause of an isolated unilateral superior oblique palsy. MRI is a helpful tool for diagnosis and follow-up. Conservative management seems to be justified as patients can remain unchanged over years. |
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Authors:
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H M Elflein; F Thömke; W Müller-Forell; S Pitz |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Strabismus Volume: 18 ISSN: 1744-5132 ISO Abbreviation: Strabismus Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9310896 Medline TA: Strabismus Country: England |
Other Details:
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Languages: eng Pagination: 83-6 Citation Subset: IM |
Affiliation:
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Department of Ophthalmology, University Medicine Centre, Johannes Gutenberg - University, Mainz, Germany. elflein@augen.klinik.uni-mainz.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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