Keywords anterior transpetrosal approach;petroclival region;cochlea;internal acoustic canal;internal carotid artery;geniculate ganglion;trigeminal nerve;eminentia arcuata;

• 关键词经岩骨前部入路;岩斜区;耳蜗;内耳道;颈内动脉;膝状神经节;三叉神经;弓状隆起;