Resumo
Definição
História e exame físico
Principais fatores diagnósticos
- perda auditiva assimétrica
- episódios progressivos de tontura
- zumbido
Outros fatores diagnósticos
- dificuldade em localizar sons
- cefaleia
- dormência facial
- fraqueza facial
- diplopia no olhar lateral
- nistagmo
- perda de equilíbrio e dificuldades de coordenação
- piscar mais lento
- dificuldades de deglutição
- distúrbios da marcha
- hidrocefalia
- papiledema
- pressão intracraniana elevada
Fatores de risco
- schwannomatose relacionada a neurofibromatose
Investigações diagnósticas
Primeiras investigações a serem solicitadas
- audiograma
- RNM ponderada em T1 usando contraste à base de gadolínio
- TC de crânio com contraste
Investigações a serem consideradas
- reflexos auditivos do tronco encefálico
Algoritmo de tratamento
tumor pequeno (graus 1-2 de Koos)
tumor médio (graus 3-4 de Koos, tamanho do tumor <3 cm)
tumor grande (graus 4 de Koos, tamanho do tumor >3 cm)
Colaboradores
Autores
Michael J. Link, MD
Professor
Departments of Neurologic Surgery and Otorhinolaryngology
Mayo Clinic
Rochester
MN
Divulgaciones
MJL is an author of a reference cited in this topic.
Matthew L. Carlson, MD
Professor
Departments of Neurologic Surgery and Otorhinolaryngology
Mayo Clinic
Rochester
MN
Divulgaciones
MLC is an author of a reference cited in this topic.
Agradecimientos
Dr Michael J. Link and Dr Matthew L. Carlson would like to gratefully acknowledge Dr Ryojo Akagami, the previous contributor to this topic.
Divulgaciones
RA has been reimbursed for instructing at a dissection course by Stryker and gives yearly lectures at a Canadian resident review course. RA was an expert panellist at a session on vestibular schwannomas at the 2019 NASBS meeting.
Revisores por pares
Rick Friedman, MD, PhD
Professor of Otolaryngology and Neurosurgery
UC San Diego
La Jolla
CA
Divulgaciones
RF declares that he has no competing interests.
Iain Swan, MD, FRCS
Senior Lecturer in Otolaryngology
Honorary Consultant Otolaryngologist
Glasgow Royal Infirmary
Glasgow
UK
Divulgaciones
IS declares that he has no competing interests.
Patrice Tran Ba Huy, MD
Department of Otorhinolaryngology-Head and Neck Surgery
AP-HP
Hopital Lariboisiere
Service ORL
Universite Paris 7
Paris and Laboratoire des Réseaux Sensorimoteurs
Paris
France
Divulgaciones
PTBH declares that he has no competing interests.
Agradecimiento de los revisores por pares
Los temas de BMJ Best Practice se actualizan de forma continua de acuerdo con los desarrollos en la evidencia y en las guías. Los revisores por pares listados aquí han revisado el contenido al menos una vez durante la historia del tema.
Divulgaciones
Las afiliaciones y divulgaciones de los revisores por pares se refieren al momento de la revisión.
Referencias
Artículos principales
Goldbrunner R, Weller M, Regis J, et al. EANO guideline on the diagnosis and treatment of vestibular schwannoma. Neuro Oncol. 2020 Jan 11;22(1):31-45.Texto completo Resumen
Ren Y, Chari DA, Vasilijic S, et al. New developments in neurofibromatosis type 2 and vestibular schwannoma. Neurooncol Adv. 2021 Jan-Dec;3(1):vdaa153.Texto completo Resumen
Lin VY, Stewart C, Grebenyuk J, et al. Unilateral acoustic neuromas: long-term hearing results in patients managed with fractionated stereotactic radiotherapy, hearing preservation surgery, and expectantly. Laryngoscope. 2005 Feb;115(2):292-6. Resumen
Pollock BE. Management of vestibular schwannomas that enlarge after stereotactic radiosurgery: treatment recommendations based on a 15 year experience. Neurosurgery. 2006 Feb;58(2):241-8. Resumen
Darrouzet V, Martel J, Enee V, et al. Vestibular schwannoma surgery outcomes: our multidisciplinary experience in 400 cases over 17 years. Laryngoscope. 2004 Apr;114(4):681-8. Resumen
Roland JT Jr, Fishman AJ, Golfinos JG, et al. Cranial nerve preservation in surgery for large acoustic neuromas. Skull Base. 2004 May;14(2):85-91.Texto completo Resumen
Artículos de referencia
Una lista completa de las fuentes a las que se hace referencia en este tema está disponible para los usuarios con acceso a todo BMJ Best Practice.

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