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P100: CRANIAL NERVE PRESERVATION IN ENDOSCOPIC ASSISTED KEYHOLE RETROSIGMOID CRANIOTOMY FOR CEREBELLOPONTINE ANGLE EPIDERMOID
Taimur Khan¹; Fernando Vale-Enrique²; David Baker²; Fernando Vale, MD²; M. Salman Ali, MD²; ¹University of California, San Diego; ²Medical College of Georgia at Augusta University

We present a case of cerebellopontine angle epidermoid. A keyhole endoscopic assisted retrosigmoid approach was performed for gross total resection of the mass without any lower cranial nerve deficits. Due to intimate relationship of epidermoids with neurovascular structures, care must be taken not to manipulate the nerves too much. A keyhole approach provides excellent operative corridor without use of retractor. 

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