A minimally invasive endoscope assisted retrosigmoid approach for removal of arachnoid cysts in the internal auditory canal: a step by step description

Revista Brasileira de Otorrinolaringologia

article

Arianna Di Stadio¹  Antonio della Volpe²  Massimo Ralli³  Valeria Gambacorta¹  Franco Trabalzini⁴  Laura Dipietro⁵  Giampietro Ricci¹ 

[1]University of Perugia, Otolaryngology Department

[2]Santobono-Posillipon Hospital

[3]University La Sapienza of Rome, Organ of Sense Department

[4]Meyer University Hospital, Otolaryngology Department

[5]Highland Instruments

关键词: Rachnoid cyst;    Surgery;    Endoscope;    Minimally invasive;    Retrosigmoid approach;   

DOI  :  10.1016/j.bjorl.2019.06.016

学科分类：医学（综合）

来源: Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial

【 摘 要 】

Introduction: Arachnoid cyst in the internal auditory canal is a quite rare pathology but due to its compressive action on the nerves in this district should be surgically removed. Several surgical techniques have been proposed but no surgeons have used the minimally assisted endoscope retrosigmoid approach for its removal. Objective: To investigate the feasibility of using a minimally invasive endoscope assisted retrosigmoid approach for surgical removal of arachnoid cysts in the internal auditory canal. Methods: Minimally invasive endoscope assisted retrosigmoid approach allows to access to the internal auditory canal through a minimally invasive retrosigmoid approach that combines the use of a microscope and an endoscope. It is performed in six steps: soft tissue step, bone step, dura step, cerebellopontine angle step (performed using an endoscope and a microscope), microscope-endoscope assisted arachnoid cysts removal and closure. We tested minimally invasive endoscope assisted retrosigmoid approach for removal of arachnoid cysts in the internal auditory canal on two human cadaveric heads (specimens) of subjects affected from audiovestibular disorders and with arachnoid cysts in the internal auditory canal confirmed by magnetic resonance imaging. Results: The mass was completely and successfully removed from the two specimens with no damage to the nerves and/or vessels in the surgical area.

【 授权许可】

CC BY