CASE REPORT

Giant Trigeminal Nerve Schwannoma Operated in Two Steps: case report

Schwannoma Gigante de Nervo Trigêmeo Operado em Duas Etapas: relato de caso

  • Isabella Cristina Mendes Rossa (1)
  • Jennyfer Paulla Galdino Chaves (2)
  • Carlos Alberto Mattozo (2)
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Resumo

Os schwannomas do nervo trigêmeo são muito raros, representando 0,36% de todos os tumores intracranianos. A sintomatologia associada a esses tumores geralmente está relacionada à redução de sensibilidade do território inervado, assim como à dor facial e à redução do reflexo córneo-palpebral. Descreve-se o caso de um paciente do sexo masculino, 21 anos, o qual apresentava hipoacusia e hipoestesia em face esquerda, cefaleia parietal esquerda, assim como dificuldade para mastigar e ansiedade. Na investigação, imagens de ressonância magnética mostraram formação extensa na fossa posterior com extensão para caverna de Meckel, fossa média e pterigopalatina. Devido à extensão do tumor, o paciente foi submetido a duas ressecções cirúrgicas. O exame anatomopatológico tumoral foi compatível com schwannoma de nervo trigêmeo.

Palavras-chave

Neoplasia; Neuroma; Células de Schwann; Nervo trigêmeo; Neurocirurgia

Abstract

Trigeminal schwannomas are very rare, representing 0.36% of all intracranial tumors. The symptoms associated with these tumors are usually related to a reduction in the sensitivity of the innervated territory, as well as facial pain and a reduction in the corneal-eyelid reflex. We describe the case of a 21-year-old male patient who presented with hypoacusis and hypoesthesia in the left face, left parietal headache, as well as difficulty chewing and anxiety. On investigation, magnetic resonance imaging showed extensive formation in the posterior fossa with extension to Meckel’s cave, middle fossa and pterygopalatine. Due to the extent of the tumor, the patient underwent two surgical resections. Tumor pathology was compatible with trigeminal nerve schwannoma.

Keywords

Neoplasm; Neuroma; Schwann cells; Trigeminal nerve; Neurosurgery

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(1) Student of Medicine, Pontifical Catholic University of Paraná, Curitiba, PR, Brazil.

(2) MD, Neurosurgeon, Cajuru University Hospital, Curitiba, PR, Brazil.


 

Received Nov 15, 2021
Corrected Feb 27, 2022
Accepted Mar 23, 2022


JBNC  Brazilian Journal of Neurosurgery

  •   ISSN (print version): 0103-5118
  •   e-ISSN (online version): 2446-6786

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