小脑前下动脉位于桥小脑角区和内听道内。尸检发现６７％的人小脑前下动脉进入内听道，该血管可对耳蜗前庭神经产生病理性压迫，并引起相应的临床症状，ＭＲＩ检查也发现内听道占位性病变。该类病人成为临床一个诊断难题。作者报道３例病人。病例１为一６３岁男性，左耳进... Anterior inferior cerebellar artery is located in the cerebellopontine angle and internal auditory canal. An autopsy found that 67% of the anterior inferior cerebellar artery into the internal auditory canal, the vascular can produce pathological oppression of the vestibular nerve of the cochlear, and cause the corresponding clinical symptoms, MRI examination also found intraocardal space-occupying lesions. Such patients have become a clinical diagnostic problems. The authors report 3 patients. Case 1 for a 63-year-old man, left ear into the ...