The mastoid emissary vein connects the posterior auricular vein to the sigmoid sinus and varies in size, number, location, and course, resulting in clinical complications. This study was conducted in response to the vast clinical implications associated with this vein. The aim of this review is to highlight and describe the prevalence, varied morphology, and morphometry of the mastoid emissary vein, how these varied parameters cause clinical complications, and how these can be rectified and avoided. A literature survey was conducted using various databases and different terms related to mastoid emissary vein were used to search the literature. Pitfalls related to surgery in the vicinity of this vein and their remedies were elucidated. The literature search revealed that the prevalence, morphology, and morphometry of mastoid emissary veins vary immensely and are responsible for morbidity and mortality. Pre-operative identification of mastoid veins is thus essential and so multidetector computed tomography of the temporal bone should be scheduled before planning surgery.
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http://dx.doi.org/10.1590/1677-5449.202300362 | DOI Listing |
Indian J Otolaryngol Head Neck Surg
October 2024
Department of Radiodiagnosis, All India Institute of Medical Sciences, Bhubaneswar, Odisha India.
Tinnitus refers to the perception of sound without any external stimuli which can be pulsatile or non-pulsatile. Dilated mastoid emissary vein (MEV) can cause pulsatile tinnitus. Herein, we report a case of persistent pulsatile tinnitus with dilated MEV managed successfully with percutaneous coiling of MEV in a 36 years male.
View Article and Find Full Text PDFJ Craniofac Surg
July 2024
Department of Anatomy, UP University of Medical Sciences Saifai, Etawah, Uttar Pradesh, India.
Mastoid emissary foramen transmitting mastoid emissary vein connects the posterior auricular vein with the sigmoid sinus. This foramen and so the mastoid emissary vein varies in prevalence, number, size and location, knowledge of which is essential for carrying out uneventful surgeries, especially retrosigmoid, mastoidectomy, and skull base surgeries. There is a paucity of literature on this foramen in the Indian context, so the study was done.
View Article and Find Full Text PDFJ Neurosurg Case Lessons
April 2024
2Department of Neurosurgery, Koç University Hospital, Gamma Knife Center, Istanbul, Türkiye.
Background: Eagle syndrome, an uncommon condition, causes symptoms due to neural and/or vascular compression from an elongated styloid process or calcified stylohyoid ligament and can also complicate other planned surgical procedures.
Observations: A 42-year-old female with loss of balance, dizziness, and ataxic gait underwent cranial magnetic resonance imaging (MRI), revealing a right-sided Koos grade IV vestibular schwannoma. Initially, a retrosigmoid craniotomy for tumor resection was planned.
Neurosurg Rev
December 2023
Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St., Suite 1300, New Orleans, LA, 70112, USA.
The mastoid foramen (MF) is located on the mastoid process of the temporal bone, adjacent to the occipitomastoid suture or the parietomastoid suture, and contains the mastoid emissary vein (MEV). In retrosigmoid craniotomy, the MEV has been used to localize the position of the sigmoid sinus and, thus, the placement of the initial burr hole. Therefore, this study aimed to examine the exact location and variants of the MF and MEV to determine if their use in localizing the sigmoid sinus is reasonable.
View Article and Find Full Text PDFOper Neurosurg (Hagerstown)
December 2023
Department of neurosurgery, International Neuroscience Institute, Hannover, Germany.
Indications Corridor And Limits Of Exposure: The retrosigmoid intradural suprameatal approach is mostly indicated for tumors in the cerebellopontine angle extending toward the Meckel cave and supratentorial regions, most frequently meningiomas and schwannomas. This approach was first established by the senior author in 1982.
Anatomic Essentials Need For Preoperative Planning And Assessment: Nervous structures: cranial nerves III to XII, cerebellum, and brainstem.
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