目的：为后鼓室及耳科病变的影像诊断和手术治疗提供解剖学基础。
Objective: to study the sectional anatomy and ct image of posterior tympanum and provide anatomical data for image diagnosis and operation treatment of this area.
结论在根除病灶的基础上保存并提高听力，IBM合并后鼓室径路为慢性化脓性中耳乳突炎外科手术的合理选择。
Conclusion IBM combined with posterior tympanum is a good choice for preserving or improving hearing based on eradication of the focus among patients with chronic suppurative otitis media.
岩小神经由鼓室神经丛发出后，穿过耳蜗窗与前庭窗之间，越过鼓膜张肌窝，走向耳神经节。
The lesser petrosal nerve comes from the tympanic plexus running between cochlear window and vestibular window, over recess of tensor sympani muscle and toward otogaglion .
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