title: Metastatic lung cancer in the cerebellopontine angles mimicking bilateral acoustic neuroma.
abstract: Bilateral cerebellopontine angle (CPA) tumors identified on MRI are considered bilateral acoustic neuromas, the definitive diagnostic criterion of neurofibromatosis 2 (NF-2). We report the case of a 67-year-old man with progressive bilateral hearing loss, vertigo, and imbalance. MRI revealed bilateral enhancing CPA lesions, which were suggestive of acoustic neuromas and a diagnosis of NF-2. However, autopsy showed metastatic adenocarcinoma of the lung. Therefore, metastatic carcinoma to the CPA can mimic bilateral acoustic neuromas; imaging studies alone may be insufficient to diagnose NF-2.
authors.affiliation: New Jersey Neuroscience Institute, J.F.K. Medical Center, Seton Hall School of Graduate Medical Education, Edison, NJ, USA.
authors.forename: Subramanian
authors.initials: S
authors.lastname: Hariharan
authors.forename: Jianhua
authors.initials: J
authors.lastname: Zhu
authors.forename: Mangala A
authors.initials: MA
authors.lastname: Nadkarni
authors.forename: John E
authors.initials: JE
authors.lastname: Donahue
mesh_terms: D000230:Adenocarcinoma / Q000556:secondary*; D000368:Aged; D001932:Brain Neoplasms / Q000556:secondary*; D002530:Cerebellopontine Angle / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009464:Neuroma, Acoustic