CC BY-NC-ND 4.0 · J Neurol Surg B 2019; 80(S 03): S325-S326
DOI: 10.1055/s-0038-1676997
Skull Base: Operative Videos
Georg Thieme Verlag KG Stuttgart · New York

Epidermoid Cyst in the Cerebellopontine Angle: Technical Description Video

Marcus Vinicius de Morais
1  Department of Neurosurgery, Hospital Militar de Área de São Paulo, São Paulo, Brazil
,
Romulo Almino de Alencar Arrais Mota
1  Department of Neurosurgery, Hospital Militar de Área de São Paulo, São Paulo, Brazil
,
Thais Aparecida Marques
1  Department of Neurosurgery, Hospital Militar de Área de São Paulo, São Paulo, Brazil
,
Rafael Duarte de Souza Loduca
1  Department of Neurosurgery, Hospital Militar de Área de São Paulo, São Paulo, Brazil
,
Paulo Mácio de Porto Melo
1  Department of Neurosurgery, Hospital Militar de Área de São Paulo, São Paulo, Brazil
› Author Affiliations
Further Information

Address for correspondence

Marcus Vinicius de Morais, MD
Department of Neurosurgery, Hospital Militar de Área de São Paulo
Rua Vergueiro, 4241 Apto 91
CEP 04101-300, São Paulo, SP
Brazil   

Publication History

01 June 2018

11 November 2018

Publication Date:
08 January 2019 (eFirst)

 

    Abstract

    Objectives To describe the operative technique for treatment of epidermoid cysts in the cerebellopontine angle (CPA).

    Design The present video is a case report.

    Setting Patient is positioned in three-quarters prone. Retrosigmoid approach should be made under neurological monitoring and with neuronavegation to help achieve maximal safe resection. The skin incision is vertical, slightly curved, 5 mm medial to the mastoid notch. Craniectomy is superiorly limited by the transverse sinus and laterally limited by the sigmoid sinus. A C-shaped durotomy is made with its base protecting the sigmoid sinus. The lesion is removed in piecemeal fashion ([Fig. 1]). The neurological monitoring helps.

    Results The patient was discharged 2 days later without neurological deficits.

    Conclusions The surgical treatment associated with neurological monitoring and neuronavegation is a safe procedure to treat epidermoid cysts in the CPA.

    The link to the video can be found at: https://youtu.be/sEuFyq9c2sw.


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    Zoom Image
    Fig. 1 Intraoperative images. (A) Patient position, (B) asterion exposure, (C) epidermoid cyst identification, (D) lesion removal in piecemeal fashion, (E) intraoperative neurological monitoring, (F) anatomopathological study confirming the diagnosis.

    www.thieme.com/skullbasevideos

    www.thieme.com/jnlsbvideos


    Quality:

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    Conflict of Interest

    None to disclose.

    Address for correspondence

    Marcus Vinicius de Morais, MD
    Department of Neurosurgery, Hospital Militar de Área de São Paulo
    Rua Vergueiro, 4241 Apto 91
    CEP 04101-300, São Paulo, SP
    Brazil   

      
    Zoom Image
    Fig. 1 Intraoperative images. (A) Patient position, (B) asterion exposure, (C) epidermoid cyst identification, (D) lesion removal in piecemeal fashion, (E) intraoperative neurological monitoring, (F) anatomopathological study confirming the diagnosis.