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Year : 2016  |  Volume : 5  |  Issue : 1  |  Page : 33-35

An unusual cause of trochlear nerve palsy and brainstem compression

Department of Neurosurgery, Grant Medical College and Sir JJ Group of Hospitals, Mumbai, Maharashtra, India

Correspondence Address:
Jasmit Singh
Department of Neurosursgery, Grant Medical College and Sir JJ Group of Hospitals, Mumbai - 400 008, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2278-344X.173884

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Schwannoma originates from the Schwann cells at the Obersteiner-Redlich zone, which marks the junction of central and peripheral myelin of the cranial nerves. Most frequently affected are the vestibular, trigeminal, and facial nerves followed by the lower cranial nerves. Trochlear schwannoma in the absence of neurofibromatosis is a rare entity. The purpose of this report is to serve as a reminder to consider trochlear nerve schwannoma in the list of differential diagnosis of such tumors as the outcome is far better than the intraaxial tumor in that location.

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