Disección cadavérica endoscópica de oído medio / Endoscopic cadaver dissection of middle ear / Dissecção endoscópica de orelha média em cadáveres

El avance tecnológico en los últimos tiempos ha permitido la creación de nuevos abordajes quirúrgicos. En este sentido surge el endoscopio como elemento capaz de ofrecer una gran visualización de los diferentes accidentes anatómicos de la cavidad timpánica sin necesidad de resecar tejido óseo circundante, ofreciendo de alguna manera la posibilidad de resolver patologías otológicas mediante un abordaje mínimamente invasivo. En este trabajo se demuestran los diferentes pasos de la disección cadavérica endoscópica de oído con el fin de facilitar al cirujano en formación el inicio en la materia.

Technological advances during the last time have enabled the creation of new surgical approaches. Endoscopic surgery comes out in this sense as an element capable of offering great visualisation of the different anatomical structures within the tympanic cavity without the need of removing surrounding bone structure bringing the possibility of treating otological pathology with a minimum invasive approach. In this paper the different steps to cadaveric disection are shown in order to initiate the novel surgeon in the subject.

O avanço tecnológico nos últimos tempos tem permitido a criação de novas abordagens cirúrgicas. Neste sentido surge o endoscópio como elemento capaz de oferecer uma visualização de diferentes acidentes anatômicos da cavidade timpânica sem necessidade de ressecar tecido ósseo circundante, oferecendo de alguma maneira a possibilidade de resolver patologias otológicas usando uma abordagem minimamente invasiva. Neste trabalho se mostra as diferentes etapas da dissecção endoscópica de ouvido com o fim de facilitar o cirurgião em formação o início na matéria.

Transcanal resection of a type 1 glomus tympanicum

@#<p style="text-align: justify;"><strong>OBJECTIVES:</strong> To present a case of type 1 glomus tympanicum, its clinical presentations, surgical management and outcome.<br /><strong>METHODS:</strong><br /><strong>Design:</strong> Case Report<br /><strong>Setting:</strong> Tertiary Government Hospital<br /><strong>Patient:</strong> One<br /><strong>RESULTS:</strong> A 44-year-old woman with pulsatile tinnitus, vertigo, headache, ear fullness and decreased hearing on the right had a pulsatile reddish mass behind the tympanic membrane and Brown sign. Weber test lateralized to the right with mild conductive hearing loss on pure tone audiometry. Contrast CT scan demonstrated a 5x6 mm well-defined enhancing mass in the meso- and hypotympanum. Internal auditory canal MRI showed an avidly enhancing 5x3x4 mm nodule within the right middle ear adjacent to the cochlear promontory and anterior to the lateral semicircular canal. Impression was glomus tympanicum, type 1. The mass was excised via transcanal approach with post-operative resolution of tinnitus, headache, vertigo and improvement of hearing. Final histopathology was consistent with glomus tumor.<br /><strong>CONCLUSION:</strong> Glomus tympanicum tumors are rare, benign middle ear paragangliomas that arise from Jacobson's nerve are slow-growing and locally destructive. CT scan and MRI may detect involvement of other structures. Surgical resection is the primary treatment modality. Type 1 glomus tympanicum tumors are small and limited to the promontory and a less-invasive transcanal approach may be employed.</p>