title: Extra-axial medulloblastoma in cerebello-pontine angle: A report of a rare case with literature review.
abstract: Medulloblastoma is quite uncommon in the adult population and even rarer in extra-axial site in cerebello-pontine (CP) angle. In this report, a 23-year-old male patient with a two month history of deafness, nausea, vomiting and ataxia is presented. Clinical and radiological findings demonstrated a heterogeneously enhanced extra-axial lesion in the right CP angle. Total excision was performed and the histopathological features of medulloblastoma were confirmed. After surgery, the patient had no neurological deficit and the audiometric findings were improved. In addition, he underwent adjuant radiotherapy and no sign of metastatic mass was observed in follow-up spinal cord MRI. Although extremely rare, medulloblastoma must be considered in the differential diagnosis of extra-axial CP angle lesions.
authors.affiliation: 1. Department of Neurosurgery, Rasool-e-Akram Hospital, Iran University of Medical Sciences, Tehran, Iran. bahrami_eses@yahoo.com.
authors.forename: Eshagh
authors.initials: E
authors.lastname: Bahrami
authors.affiliation: 2. Department of Neurosurgery, Rasool-e-Akram Hospital, Iran University of Medical Sciences, Tehran, Iran. dr_sahar_bakhti@yahoo.com.
authors.forename: Sahar
authors.initials: S
authors.lastname: Bakhti
authors.affiliation: 3. Division of Clinical geriatrics, Department of Neurobiology, Care Sciences, and Society (NVS), Karolinska Institutet, Stockholm, Sweden. sm.fereshtehnejad@ki.se.
authors.forename: Seyed-Mohammad
authors.initials: SM
authors.lastname: Fereshtehnejad
authors.affiliation: 4. Department of Neurosurgery, Rasool-e-Akram Hospital, Iran University of Medical Sciences, Tehran, Iran. m_parvaresh@yahoo.com.
authors.forename: Mansour
authors.initials: M
authors.lastname: Parvaresh
authors.affiliation: 5. Department of Neurosurgery, Milad Hospital, Tehran, Iran. dr_mr_khani@yahoo.com.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Khani
keywords: Adult; Cerebello-pontine (CP) angle; Extra-axial; Medulloblastoma