A novel technique to identify the nerve of origin in head and neck schwannomas.
J Laryngol Otol
; 132(5): 452-456, 2018 May.
Article
en En
| MEDLINE
| ID: mdl-29665890
ABSTRACT
OBJECTIVE:
Identifying the nerve of origin in head and neck schwannomas is a diagnostic challenge. Surgical management leads to a risk of permanent deficit. Accurate identification of the nerve would improve operative planning and patient counselling.METHODS:
Three patients with head and neck schwannomas underwent a diagnostic procedure hypothesised to identify the nerve of origin. The masses were infiltrated with 1 per cent lidocaine solution, and the patients were observed for neurological deficits.RESULTS:
All three patients experienced temporary loss of nerve function after lidocaine injection. Facial nerve palsy, voice changes with documented unilateral same-side vocal fold paralysis, and numbness in the distribution of the maxillary nerve (V2), respectively, led to a likely identification of the nerve of origin.CONCLUSION:
Injection of lidocaine into a schwannoma is a safe, in-office procedure that produces a temporary nerve deficit, which may enable accurate identification of the nerve of origin of a schwannoma. Identifying the nerve of origin enhances operative planning and patient counselling.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias de los Nervios Craneales
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Técnicas de Diagnóstico Neurológico
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Neoplasias de Cabeza y Cuello
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Anestésicos Locales
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Lidocaína
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Neurilemoma
Tipo de estudio:
Evaluation_studies
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Prognostic_studies
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
J Laryngol Otol
Asunto de la revista:
OTORRINOLARINGOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Estados Unidos