title: Meningioma of the internal auditory canal with rapidly progressive hearing loss: case report.
abstract: A 38-year-old male presented with a meningioma within the internal auditory canal (IAC) manifesting as rapidly progressive hearing loss over a period of one month. He had a 2-year history of tinnitus. Magnetic resonance imaging revealed a 10-mm intracanalicular tumor, which was surgically resected by a retrosigmoid lateral suboccipital approach. The histological findings showed meningothelial meningioma. The patient had no facial palsy after surgery, but his cochlear function did not recover. Common symptoms of IAC meningiomas are tinnitus and hearing loss, but rapidly progressive hearing loss is very rare. IAC meningioma is rare but should be taken into consideration as a cause of rapidly progressive hearing loss.
authors: Department of Neurosurgery, Tokyo Women's Medical University, Yachiyo, Chiba, Japan. tkawamata@nij.twmu.ac.jp
authors: Tatsuya
authors: T
authors: Ishikawa
authors: Takakazu
authors: T
authors: Kawamata
authors: Akitsugu
authors: A
authors: Kawashima
authors: Kohji
authors: K
authors: Yamaguchi
authors: Osami
authors: O
authors: Kubo
authors: Tomokatsu
authors: T
authors: Hori
authors: Yoshikazu
authors: Y
authors: Okada
mesh_terms: D000328:Adult; D015834:Cochlear Diseases / Q000150:complications / Q000473:pathology* / Q000601:surgery; D004428:Ear Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D007758:Ear, Inner; D034381:Hearing Loss / Q000209:etiology* / Q000473:pathology / Q000628:therapy; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D008579:Meningioma / Q000150:complications / Q000473:pathology* / Q000601:surgery; D014012:Tinnitus / Q000209:etiology / Q000473:pathology / Q000628:therapy; D016896:Treatment Outcome