Mastoid foramen, mastoid emissary vein and clinical implications in neurosurgery

Acta neurochirurgica
Martin HamplOndrej Nanka

Abstract

Mastoid emissary vein is especially important from the neurosurgical point of view, because it is located in variable number in the area of the occipitomastoid suture and it can become a source of significant bleeding in surgical approaches through the mastoid process, especially in retrosigmoid craniotomy, which is used for approaches to pathologies localized in the cerebellopontine angle. Ideal imaging method for diagnosis of these neglected structures when planning a surgical approach is high-resolution computed tomography. The aim of this work was to provide detailed information about this issue. We studied a group of 295 skulls obtained from collections of five anatomy departments and the National Museum. Both quantitative and qualitative parameters of the mastoid foramen were evaluated depending on side of appearance and gender. Individual distances of the mastoid foramen from clearly defined surface landmarks (asterion, apex of mastoid process, foramen magnum) and other anatomical structures closely related to this issue (width of groove for sigmoid sinus, diameters of internal and external openings of mastoid foramen) were statistically processed. The most frequently represented type of the mastoid foramen is type II by...Continue Reading

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Citations

Jun 9, 2020·Neurosurgical Review·Cindy WangR Shane Tubbs
Jul 10, 2021·Journal of Anatomy·Stanislava EisováEmiliano Bruner

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