Document Detail

Trochlear nerve schwannoma with intratumoral hemorrhage: case report.
MedLine Citation:
PMID:  16575299     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE AND IMPORTANCE: Schwannomas originating from the trochlear nerve without neurofibromatosis are extremely rare. Thirty-four cases have previously been reported in the literature, and only 25 cases were pathologically diagnosed. In addition, intratumoral hemorrhage in intracranial schwannomas is also rare. Approximately 30 cases of intracranial schwannomas with intratumoral hemorrhage have been reported. CLINICAL PRESENTATION: A 42-year-old man presented with left hemiparesis and right trochlear nerve palsy. Magnetic resonance imaging revealed an abnormal cystic lesion beside the brainstem. His symptoms rapidly worsened after enlargement of the mass because of intratumoral hemorrhage. INTERVENTION: Gross total removal of the tumor was performed via the anterior transpetrosal approach. The tip of the trochlear nerve was fanned out and unified with the tumor. The tumor was diagnosed as a schwannoma. CONCLUSION: The patient's hemiparesis improved postoperatively, and he was discharged 1 week after the operation. Magnetic resonance imaging performed 4 months later revealed no regrowth of the tumor. Only right trochlear nerve palsy has persisted. This report is the second case of intratumoral hemorrhage from a trochlear nerve schwannoma.
Shigeo Ohba; Tomoru Miwa; Takeshi Kawase
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Publication Detail:
Type:  Case Reports; Journal Article; Review    
Journal Detail:
Title:  Neurosurgery     Volume:  58     ISSN:  1524-4040     ISO Abbreviation:  Neurosurgery     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-03-31     Completed Date:  2006-08-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7802914     Medline TA:  Neurosurgery     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E791; discussion E791     Citation Subset:  IM    
Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan.
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MeSH Terms
Cerebral Hemorrhage / complications,  diagnosis*,  surgery
Cranial Nerve Neoplasms / complications,  diagnosis*,  surgery
Neurilemmoma / complications,  diagnosis*,  surgery
Trochlear Nerve Diseases / complications,  diagnosis*,  surgery

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