The prevalence and morphometric features of mastoid emissary vein on multidetector computed tomography

Demirpolat, Gülen; Bülbül, Erdoğan; Yanık, Bahar

doi:10.5603/fm.a2016.0021

Cited by 12 publications

(15 citation statements)

References 20 publications

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“…Demirpolat et al 12 reported mean mastoid canal diameters of 1.58 AE 0.86 mm on the right and 1.48 AE 0.79 mm on the left. Mean MEC diameters in our study were 0.7 mm (IQR 0.5-1.0) in the control group and 1.6 mm (IQR 1.0-2.0) in the COM group.…”

Section: Discussionmentioning

confidence: 99%

“…However, the emissary veins may represent a primary outflow route in patients with intracranial hypertension, high flow vascular malformation, obstruction in the internal jugular veins, or hypoplasia/aplasia. 3,12,13 The emissary veins prevent increases in intracranial pressure by providing cerebral venous drainage in patients with pathologies of the neck or base of the skull or with internal jugular vein occlusion. [15][16][17] Calibration of the emissary vein canals can increase under conditions of high vascular pressure or hypoplasia or aplasia of the jugular vein that may accompany states such as craniosynostosis.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have reported that there may be more than one MEC/MEV with differing diameters. 3,12,13,19 However, MEVs or MECs have not been investigated in patients with otitis. Our review of the literature revealed one previous study assessing the petrosquamosal sinus (PSS), a rare emissary vein, using HRCT in patients with otitis.…”

Section: Discussionmentioning

confidence: 99%

“…An MEV diameter greater than 3.5 mm is clinically significant. 3,12 Excessive bleeding deriving from a wide MEV during modified radical mastoidectomy was reported in a patient with cholesteatoma. The MEV was missed at preoperative imaging in that study.…”

Section: Discussionmentioning

confidence: 99%

“…11 The number of radiological studies of the emissary veins is limited. 12,13 Our review of the literature revealed no previous studies investigating the MEV and MEC in patients with COM. However, we did find one study evaluating the petrosquamosal sinus canal, one of the emissary veins.…”

Section: Introductionmentioning

confidence: 91%

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Evaluation of the Mastoid Emissary Canals with Computerized Tomography in Patients with Chronic Otitis Media

Özen

Şahin

2019

J Neurol Surg B

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Background The mastoid emissary veins (MEVs) pass through the mastoid emissary canal-mastoid foramen (MEC-MF) in the mastoid region of the skull. MEVs can give rise to complications during surgical procedures. The purpose of our study was to investigate the morphological and morphometric characteristics of MECs of patients with clinical chronic otitis media (COM) using high-resolution computed tomography (HRCT). Methods Patients diagnosed with COM and undergoing temporal HRCT were identified by retrospectively scanning our hospital's automation system. Patients undergoing temporal HRCT for reasons other than COM, infection or tinnitus were identified for the control group by scanning the PACS archive. Sixty-two mastoid regions were examined in 38 unilateral and 12 bilateral COM patients, and 100 mastoid regions in the 50 patients in the control group. The presence of an accessory MEC-MF and MEC-MF diameters was evaluated in both groups. Results Main MEC diameters on the side of the ear with COM were 1.6 mm, and total accessory and main MEC diameters were 1.8 mm, both values being significantly higher than in the control group. Presence of accessory MEC on the side of the ear with COM was determined at 61.8%, significantly higher than in the control group. Conclusion Preoperative awareness of cranial venous drainage abnormalities is important to reduce surgical complications. Our study shows that MECs may be wider in diameter in patients with COM. MECs in COM patients must be identified before surgery to the mastoid region.

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Section: Discussionmentioning

confidence: 99%