Computed tomographic evaluation of surgically significant vascular variations related with the temporal bone

Atilla, Serhan; Akpek, Sergin; Uslu, Sabri; Ilgıt, Erhan; Işık, Sedat

doi:10.1016/0720-048x(95)00619-2

Cited by 71 publications

(82 citation statements)

References 12 publications

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“…Preoperative complementary exams, such as computed tomography, still require further sensitivity to detect this specific type of affection. Atilla et al, studying 700 computed tomography images, detected an incidence of only 1.4% of dehiscence at axial and coronal sections 19 , a number much smaller than what we detected in our microscopic study. In addition to the risk of intraoperative damage to ICA, CC dehiscence may also present other significant otological signs and symptoms, such as a pulsatile mass that may be taken as paragangliomas 20 , pulsatile otorrhea, ICA aneurysm and pseudoaneurysm 16 , hearing loss with ossicle affection or auditory tube dysfunction 21 , in addition to spontaneous otorrhagia.…”

Section: Discussioncontrasting

confidence: 55%

Anatomia microscópica do canal carótico e suas relações com a cóclea e a cavidade timpânica

Penido

Borin

Fukuda

et al. 2005

Rev. Bras. Otorrinolaringol.

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The knowledge of the relations between the noble and vital structures of temporal bone is still a great challenge for the otologic surgeon. The microscopic anatomic studies of the temporal bone are one of the greatest help to prevent lesions during surgical intervention. Aim: To study the anatomic correlations between the carotid canal and the cochlea, and the occurrence of dehiscence of the carotid canal in the middle ear tympanic cavity. Material and Methods: Microscopic study of 122 human temporal bones. RESULTS: The average distance between the carotid canal and the cochlea were: the shortest distance, 1.05mm; basal turn, 2.04mm; middle turn, 2.32mm; and apical turn, 5.70mm. The occurrence of dehiscence of the carotid canal inside the tympanic cavity was 35.2%. Conclusion: The small distances between the cochlea and carotid canal, and the high incidence of dehiscence in the tympanic cavity remind us that anatomical knowledge of the temporal bone is required for the best qualification of otologists.

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Section: Discussioncontrasting

confidence: 55%

Anatomia microscópica do canal carótico e suas relações com a cóclea e a cavidade timpânica

Penido

Borin

Fukuda

et al. 2005

Rev. Bras. Otorrinolaringol.

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“…An aberrant high jugular bulb (HJB) is characterized by a high-positioned jugular fossa either medial or lateral to the cochlea. It has been estimated that the incidence of HJB protruding into the tympanic cavity is 25% in temporal bone histopathologic studies [Savic and Djeric, 1987], and was 20% in a series of computed tomographic evaluations [Atilla et al, 1995]. In our previous clinical observations, the presentation incidence of HJB varied and may have been significantly lower than the histopathological or tomographical evaluation estimations [Huang et al, 2006].…”

Section: Introductionmentioning

confidence: 74%

“…CCD is defined as a definite lack of bony continuity in the carotid canal facing the tympanic cavity on the CT axial view [Atilla et al, 1995;Koesling et al, 2005;Sauvaget et al, 2006]. The HJB may be either medial or lateral to the cochlea.…”

Section: Evaluation and Measuresmentioning

confidence: 99%

“…As the ICA climbs through the petrous bone, it first passes the middle ear cavity and cochlea anteriorly and then bends to run medially to the eustachian tube. Since the bony shell covering the artery is thin and can be dehiscent in 1.4-7.7% of cases [Atilla et al, 1995;Moreano et al, 1994], surgical manipulation near the protympanum may increase the danger of injury to the ICA [Welling et al, 1993].…”

Section: Introductionmentioning

confidence: 99%

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High Computed Tomographic Correlations between Carotid Canal Dehiscence and High Jugular Bulb in the Middle Ear

et al. 2010

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Both carotid canal dehiscence (CCD) and high jugular bulb (HJB) are thought to increase the potential for disastrous consequences during middle ear surgery. Clinical co-presentation of these two great vessel variants has not yet been described. This study aims to determine the relationship between CCD and HJB based on a computed tomographic (CT) temporal bone evaluation. High-resolution CT scans of 408 temporal bones obtained from 208 adults were recruited. Carotid canal integrity, jugular bulb position, petrous apex pneumatization and the minimal thickness of the carotid canal wall (TCW) facing the tympanic cavity were examined and measured for the incidence of CCD and/or HJB. Other variables including gender, age, laterality and the presence of otitis media or mastoiditis were also collected for analysis. CCD was found in 28 ears (6.9%); 19 of these were found to also have HJB (67.9%). The presence of CCD was significantly correlated with HJB presentation. The minimal TCW in HJB ears was significantly thinner than that of normally positioned jugular bulbs. Moreover, after controlling for other candidate variables, the independent factors of age (younger or older than 50 years) and jugular bulb position (high vs. normal) were found to predict the presence of CCD. In conclusion, HJB tends to coexist with a thinner carotid canal wall. This finding emphasizes the need to be watchful for the coexistence of these two great vessel anomalies when surgeons encounter an aged patient presenting either CCD or HJB during middle ear surgery.

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“…Otoscopy may show a bluish, pulsatile mass. CT has a major role in outlining the defect of sigmoid plate [4]. During the middle ear surgery jugular bulb may injure; consequently, it is important to warn surgeons about this pitfall before the operation.…”

Section: Image Articlementioning

confidence: 99%

Dehiscent High Jugular Bulb

Erdoğan¹

2017

Clin Med Img Lib

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Computed tomographic evaluation of surgically significant vascular variations related with the temporal bone

Cited by 71 publications

References 12 publications

Anatomia microscópica do canal carótico e suas relações com a cóclea e a cavidade timpânica

Anatomia microscópica do canal carótico e suas relações com a cóclea e a cavidade timpânica

High Computed Tomographic Correlations between Carotid Canal Dehiscence and High Jugular Bulb in the Middle Ear

Dehiscent High Jugular Bulb

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