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517例中耳乳突手术中,发现解剖异常34例,其中乙状窦前移16例,外移3例;中颅窝下垂16例;鼓窦狭小7例,异常扩大1例;垂直段面神经裸露2例。
517 cases of middle ear mastoid surgery found abnormal anatomy in 34 cases, including sigmoid sinus in 16 cases, 3 cases of exophthalmos; middle cranial fossa in 16 cases sagittal sinus in 7 cases, abnormal expansion in 1 case; vertical facial nerve 2 cases of nudity.