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Journal of Korean Neurosurgical Society 1997;26(8): 1109-1113.
Report of Two of Cases Cerebellopontine Angle Epidermoid Cyst Presenting as Trigeminal Neuralgia.
Jai Joon Shim, Bum Tae Kim, Su Bin Im, Won Han Shin, Soon Kwan Choi, Bark Jang Byun
Department of Neurosurgery, Soonchunhyang University Hospital, Seoul, Korea.
The authors report two cases of epidermoid cyst in the cerebellopontine angle which presented as trigeminal neuralgia. The tumors were surgically removed by suboccipital craniectomy. The cysts were densely adherent to multiple cranial nerves, including the trigeminal nerve, and the tumors occupied adjacent cisterns. After removal of the cystic content, it was sometimes difficult to differentiate the tumor capsule from the arachnoid membrane. In one patient, trigeminal neuralgia was resolved immediately after the operation, while for two weeks postoperatively, the other suffered severe headache and facial dysesthesia due to aseptic meningitis. To avoid surgical complications, it is resonable to leave a minute capsule attached to cranial nerves or blood vessels.
Key Words: Epidermoid cyst; Cerebellopontine angle; Trigeminal neuralgia
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