title: Late metastasis of breast adenocarcinoma into internal auditory canal and cerebellopontine angle: case report.
abstract: A case of metastasis of breast adenocarcinoma into the internal auditory canal (IAC) and cerebellopontine angle (CPA) is presented, which appeared 16 years after primary tumor had been treated by surgery and radiation therapy. The 66-year old patient was considered cured from the primary disease, when she started with a rapidly developing hearing loss and intermittent facial palsy. Magnetic resonance image (MRI) displayed an intra- and extracanalicular tumor mass, which radiologically resembled a vestibular schwannoma. Surgery was performed and histopathological studies showed an adenocarcinoma compatible with breast origin. Metastasis is a rare occurrence within the IAC and CPA. Clinical history of severe facial palsy will rise suspicion of malignant tumor in spite of the radiological findings.
authors.affiliation: Department of Neurosurgery, Hannover Medical School, Hannover, Germany.
authors.forename: Edilson
authors.initials: E
authors.lastname: Marques
authors.forename: Almuth
authors.initials: A
authors.lastname: Brandis
authors.forename: Madjid
authors.initials: M
authors.lastname: Samii
authors.forename: Marcos
authors.initials: M
authors.lastname: Tatagiba
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary* / Q000601:surgery; D000368:Aged; D001943:Breast Neoplasms / Q000473:pathology*; D002528:Cerebellar Neoplasms / Q000556:secondary* / Q000601:surgery; D002530:Cerebellopontine Angle / Q000601:surgery; D004428:Ear Neoplasms / Q000556:secondary* / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging