Metastatic lung cancer in the cerebellopontine angles mimicking bilateral acoustic neuroma.
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.
Hariharan
Subramanian
S
New Jersey Neuroscience Institute, J.F.K. Medical Center, Seton Hall School of Graduate Medical Education, Edison, NJ, USA.
Zhu
Jianhua
J
Nadkarni
Mangala A
MA
Donahue
John E
JE
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