LAUSR

BACKGROUND Intracranial bronchogenic cysts(IBCs) are extremely rare. To our knowledge, this is the first report of BC in which lesions involve the middle and posterior cranial fossa as well as the infratemporal fossa. CASE DESCRIPTION We present the case of a 38-year-old woman who suffered from a cranial nerve dysfunction for 2 years. Magnetic resonance imaging(MRI) showed that there were skull base communication lesions across the middle and posterior fossa. The patient was operated on through an infratemporal fossa approach. The final diagnosis was BC after histopathological examination and immunohistochemical verification. The patient's neurological dysfunction was partially ameliorated at the half-year follow-up. CONCLUSIONS IBCs are rare.However,it should be considered in the differential diagnosis for those cystic lesions with edge enhancement or extracranial extension.