Primary Middle Cerebellar Peduncle Lymphoma with Primary Cervical Lymphoma: Repeated Misdiagnosis.

The coexistence of primary intracranial and extracranial lymphomas is relatively rare. In this study, we report a misdiagnosed case of primary middle cerebellar peduncle lymphoma (PMCPL) with primary cervical lymphoma. This case illustrates that hearing loss may be the only manifestation of PMCPL, which can be easily misdiagnosed as sudden deafness or acoustic neuroma. Patients with PMCPL may also have primary extracranial lymphoma, which should not be misdiagnosed as metastatic tumor.