World Neurosurg
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World Neurosurg
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To describe a new technique for safe drilling of the posterior wall of the internal auditory canal (IAC), in which the intact posterior lip of the internal auditory meatus is used as a fixed intraoperative reference point to preserve the integrity of labyrinthine structures. ⋯ Adequate drilling of the posterior wall of the IAC could be achieved, and tumor excision with hearing preservation was obtained by meticulous intraoperative planning and measurements based on preoperative computed tomography scanning and by keeping the intact posterior lip of the internal auditory meatus as a landmark for safe drilling.