Aberrant Internal Carotid Artery in the Tympanic Cavity

Yanmaz, Rasim; Okuyucu, Şemsettin; Burakgazi, Gülen; Bayaroğulları, Hanifi

doi:10.1097/scs.0000000000003080

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Vascular pathologies such as glomus tumor, cholesterol granuloma, DMJB, hemangioma, aneurysm of the petrosal segment of the ICA should be considered in the differential diagnosis. [6,8,9] Bilateral aberrant ICA was observed in 2 out of 4 aberrant ICA cases, and 2 cases had an unilateral aberrant ICA on the right TC.…”

Section: Discussionmentioning

confidence: 94%

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Non-inflammatory and non-neoplastic soft tissue lesions of the tympanic cavity

Burakgazi¹,

Bayaroğulları²

2020

Anatomy

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Objectives: Tympanic cavity (TC) is an anatomically challenging region for the diagnosis of lesions located inside it. Radiological diagnosis and demonstration of the anatomic localization of sporadic lesions such as vascular malformations and meningocele are essential for the prevention of complications that may occur during operation and recurrent unnecessary interventions. The aim of the present study was to demonstrate the radiological appearance of the vascular variations and the post-traumatic soft tissue lesions which are rarely encountered in TC. Methods: A total of 3525 temporal multi-slice computed tomography (MSCT) images were evaluated between 2010–2018. Twelve cases with non-inflamatory and non-neoplastic soft tissue lesions in TC were detected and 2 with meningocele were included in the study. Results: Of the 12 cases, 6 were males and 6 were females. The mean age of the patients was 26.16 years. Four cases had an aberrant internal carotid artery (ICA), being bilateral in 2 cases and right sided in the remaining 2 cases. Six cases had dehiscent mega jugular bulb (DMJB); and 2 cases had post-traumatic meningocele. Conclusion: Vascular malformations and meningoceles are rarely observed in TC. They may present nonspecific clinical signs and symptoms; however, they should be evaluated with MSCT and MRI before the surgical interventions regarding the middle ear to prevent possible complications.

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Section: Discussionmentioning

confidence: 94%

“…MRI is used to evaluate soft tissue lesions and their relationships, while MRI angiography provides useful information for vascular structures. [1,[5][6][7] An aberrant ICA and a DHJB are not so common. Typically, ICA is located in the carotid canal of the petrous part of the temporal bone and is adjacent to the anterior wall of TC.…”

Section: Discussionmentioning

confidence: 99%

Non-inflammatory and non-neoplastic soft tissue lesions of the tympanic cavity

Burakgazi¹,

Bayaroğulları²

2020

Anatomy

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“…The caroticotympanic artery originates from the petrous ICA and enters the middle ear where it anastomoses with the inferior tympanic branch of the APhA; this connection forms the basis of the uncommon aberrant carotid artery variant in which the APhA essentially reconstitutes the ICA in the setting of cervical ICA agenesis. 5 The mandibular artery, which can originate with the vidian artery from a common trunk, exits the temporal bone inferiorly to supply pharyngeal structures and also connect with mucosal APhA branches.…”

Section: Petrous Areamentioning

confidence: 99%

Dangerous Extracranial–Intracranial Anastomoses: What the Interventionalist Must Know

Rinaldo

Brinjikji

2020

Semin intervent Radiol

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The extracranial and intracranial circulations are richly interconnected at numerous locations, a functional connectivity which underlies their impressive capacity for adaptive plasticity in the setting of vasoocclusive disease. While evolutionarily beneficial, these connections can also result in inadvertent communication with the intracranial circulation during embolization of extracranial vessels, potentially resulting in stroke or cranial nerve palsy. While these anastomoses are always present to a certain extent, flow through them occurs under predictable circumstances, and thus embolization of the extracranial vasculature can be performed safely when knowledge of functional anatomy is combined with adherence to basic principles. Herein, we will review the anatomy of known extracranial–intracranial anastomoses and strategies for avoidance of unwanted intracranial embolization. We will also review the vascular supply to cranial nerves most at risk during common neurointerventional procedures, as well as blood supply to mucosal structures.

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