title: Vestibular schwannoma with repeated intratumoral hemorrhage.
abstract: A symptomatic hemorrhage from a vestibular schwannoma is extremely rare, despite its relatively high incidence in the cerebellopontine angle. Much more unusual are repeated intratumoral hemorrhages. The authors report on such a rare case of repeated intratumoral hemorrhage from a vestibular schwannoma, presenting with sudden exacerbation of headache, nausea and vomiting. This second hemorrhage was confirmed by CT scan on the day of the onset of symptomatic exacerbation, which was 9 days after the initial CT scan, showing an enlarged amount of blood within the tumor. The MRI scan confirmed this CT finding. After removal, the tumor proved to be a typical vestibular schwannoma of mixed Antoni types A and B. Thin-dilated vessels with hemorrhage and hemosiderin-laden macrophages were observed. The patient's postoperative course was uneventful. A total of 28 reported cases of a single intratumoral hemorrhage in vestibular schwannomas, and one reported case of repeated hemorrhage are reviewed.
authors.affiliation: Department of Neurosurgery, Chungnam National University Hospital, Taejon, South Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
authors.forename: J Y
authors.initials: JY
authors.lastname: Youm
authors.forename: S H
authors.initials: SH
authors.lastname: Song
authors.forename: Y
authors.initials: Y
authors.lastname: Kim
authors.forename: K S
authors.initials: KS
authors.lastname: Song
mesh_terms: D000328:Adult; D002543:Cerebral Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D003390:Cranial Nerve Neoplasms / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009464:Neuroma, Acoustic / Q000150:complications* / Q000473:pathology; D012008:Recurrence; D014057:Tomography, X-Ray Computed; D014725:Vestibular Nerve