title: Bilateral cerebellopontine angle lesions not always NF2: diagnostic pitfall.
abstract: Bilateral internal auditory canal (IAC) tumours are almost exclusively associated with bilateral vestibular schwannomas, and there is very little, if anything, that can mimic this appearance. We present a very rare case of a 75-year-old gentleman who initially presented with bilateral IAC tumours and later diagnosed as an isolated primary CNS myeloma without systemic involvement. This is a very rare presentation and has important diagnostic and therapeutic implications. He was treated with a combination of lenalidomide and dexamethasone. The treatment was well tolerated but with limited response. Although rare, metastasis should be considered as a differential diagnosis of IAC lesions.
authors.affiliation: Department of Neurosurgery, Aberdeen Royal Infirmary, Aberdeen. ahsan.rao@nhs.net
authors.forename: Ahsan
authors.initials: A
authors.lastname: Rao
authors.forename: Alistair
authors.initials: A
authors.lastname: Lawrie
authors.forename: Peter
authors.initials: P
authors.lastname: Bodkin
authors.forename: Jane
authors.initials: J
authors.lastname: Tighe
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Kamel
mesh_terms: D000368:Aged; D001259:Ataxia / Q000209:etiology; D002526:Cerebellar Diseases / Q000175:diagnosis*; D002530:Cerebellopontine Angle; D003131:Combined Modality Therapy; D003638:Deafness / Q000209:etiology; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000188:drug therapy / Q000532:radiotherapy; D009101:Multiple Myeloma / Q000175:diagnosis* / Q000188:drug therapy / Q000532:radiotherapy; D016518:Neurofibromatosis 2 / Q000175:diagnosis; D013651:Taste Disorders / Q000209:etiology; D014012:Tinnitus / Q000209:etiology