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Abducens schwannoma inside the cavernous sinus proper: case report
Toru Nakagawa1, Koichi Uchida, Mehmet Faik Ozveren
1Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan.
Surgical Neurology
|May 29, 2004
Summary
This study presents a rare case of abducens nerve schwannoma within the cavernous sinus. Unlike previous reports, this patient experienced full recovery from abducens nerve palsy after surgical removal.
Area of Science:
- Neurosurgery
- Neurology
- Ophthalmology
Background:
- Schwannomas are rare tumors affecting cranial nerves.
- Abducens nerve schwannomas exclusively within the cavernous sinus are exceptionally rare, with only two prior reported cases.
- Previous cases resulted in persistent abducens nerve palsy post-surgery.
Observation:
- A 47-year-old female presented with left abducens and trigeminal nerve palsies.
- Neuroradiology identified an intra-cavernous sinus tumor.
- Surgical exploration confirmed the schwannoma's location within the cavernous sinus, specifically involving the abducens nerve.
Findings:
- Complete surgical removal of the abducens nerve schwannoma was achieved.
- The patient experienced transient abducens nerve palsy postoperatively.
- Full recovery from abducens nerve palsy occurred within six months.
Implications:
- Surgical preservation of abducens nerve function is possible for tumors originating within the cavernous sinus.
- Thorough preoperative imaging and understanding of cavernous sinus anatomy are crucial for successful outcomes.
- This case expands the understanding of surgical possibilities for rare cranial nerve tumors.