Unilateral agenesis of the internal carotid artery presented as transient ischaemic attack: a case report

Kiritsi, Olga; Noussios, George; Tsitas, Konstantinos; Lappas, Dimitrios

doi:10.1007/s00276-011-0901-z

Cited by 13 publications

(11 citation statements)

References 6 publications

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“…The external carotid artery is a bud of the third aortic arch; at 40 days, the migration of the external carotid origin determines the site of the carotid bifurcation [6] . ICA is completely formed after 6 weeks of fetal life [5] . Agenesis of ICA results from atresia or involution of the third aortic arches and the distal portion of the dorsal aortas, in the 20- to 24-mm stage [7] .…”

Section: Discussionmentioning

confidence: 99%

“…Congenital absence (agenesis) of ICA is a rare vascular disorder incidentally discovered by imaging and whose incidence is about 0.01% [4] . Agenesis is a complete developmental interruption of ICA with the absence of the ipsilateral carotid canal; more frequently this anomaly involves the left ICA [5] . The absence of the bony carotid canal is essential to differentiate this anomaly from chronic ICA occlusion.…”

Section: Discussionmentioning

confidence: 99%

“…Possible symptoms include recurrent headache, hearing loss, hemiparesis, blurring vision, ipsilateral Horner’s syndrome, and intracranial hemorrhage due to ruptured aneurysms. ICA agenesis is associated with 25%-34% of cerebral aneurysm formation [5] ; increased flow through collateral artery is the possible cause of this increased prevalence.…”

Section: Discussionmentioning

confidence: 99%

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Computed tomography angiography of unilateral agenesis of the internal carotid artery: 2 cases report with focus on embryology, collateral pathways, and imaging

Pierro

Cilla

Cucci

et al. 2017

Radiology Case Reports

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Congenital absence of internal carotid artery (ICA) is a rare anomaly seen in around 0.01% of the population. High incidence of aneurysms is reported in these patients population. Many patients are asymptomatic as the development of a collateral circulation ensures cerebral perfusion. The embryology, the common collateral pathways, and the imaging findings associated with this anomaly are illustrated with 2 new cases. We reported the cases of 2 totally asymptomatic patients at the time of imaging in which ICA agenesis was proved on computed tomography angiography. On imaging, all the most important findings necessary for ICA agenesis diagnosis have been identified and described. Noninvasive imaging techniques are currently the mainstay of ICA agenesis diagnosis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Computed tomography angiography of unilateral agenesis of the internal carotid artery: 2 cases report with focus on embryology, collateral pathways, and imaging

Pierro

Cilla

Cucci

et al. 2017

Radiology Case Reports

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“…The study conducted considerably supplements existing data concerning the structure and topography of the carotid arteries during the fetal and early neonatal period of human ontogenesis, which is an essential constituent while making perinatal diagnostics and understanding real parameters of the norm and pathology [4,5,16,17,19,20]. The obtained new scientifically substantiated data concerning organometric characteristic of the carotid arteries at all the stages of the perinatal period determine morphological basis and are essential to determine developmental criteria of the carotid arteries and their correspondence to the terms of gestation [7,8,13,18].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of organometric parameters of the coronary arteries in the perinatal period of ontogenesis

Herasym

Слободян

2019

Biomed. and Biosoc. Anthrop.

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Formation of the structure and topography of the coronary arteries during the fetal and early neonatal periods of human ontogenesis is an essential constituent while making perinatal diagnosis and understanding real parameters of the norm and pathology. Objective of the study is to determine organometric parameters of the carotid arteries during the fetal and early neonatal periods of human ontogenesis. The study was conducted on 50 specimens of dead fetuses (from 4 to 10 months) and 9 neonates (5 isolated complexes of organs in particular) by means of adequate anatomical methods: macrodissection, injection of the blood vessels, making topographic-anatomical sections, morphometry, and statistical analysis. During perinatal period external diameters and lengths of the carotid arteries are found to be characterized by two periods of an accelerated development and the period of relatively slow development. For the external diameter of the right common carotid artery and the external diameter of the left internal carotid artery the periods from the 4th to 7th months of the intrauterine development and the period from the 9th month to the neonatal period are the periods of an accelerated development; the periods from the 7th to 9th months of development are the period of relatively slow development. The periods from the 4th to the 7th months of the intrauterine development and the period from the 10th month till neonatal period are the periods of an accelerated development for the external diameter of the left common carotid artery and external diameter of the right internal carotid artery; the period from the 7th to the 10th months of development is the period of relatively slow development. The periods from the 4th to the 7th months of the intrauterine development and from the 8th month of development till the neonatal period are the periods of an accelerated development for the external diameter of the right and left external carotid arteries; the period during 7-8th months is the period of relatively slow development. The length of the cervical part of the right and left carotid arteries is characterized by the two periods of an accelerated development – from the 4th to the 6th month and from the 7th month till the neonatal period; the period of relatively slow development is from the 6th to the 7th month of the intrauterine development. Comparison of the developmental periods of the carotid arteries with all the possible organometric parameters enables to affirm that practically similar enlargement of the external diameters of the common, external and internal carotid arteries both from the right and left sides is peculiar for the period of relatively slow development. The first period of an accelerated development of the carotid arteries is more specific for the external diameter and length of the left common and left external artery contrary to the second accelerated period of development of the carotid arteries. It is characterized by enlargement of the external diameters of the right common and right external carotid artery. A reliable difference of the mean values of the external diameters of the right and left common, external and internal carotid arteries is peculiar for the 4th, 7th, 10th months of development and for the neonatal period for the common carotid arteries; for the external carotid arteries – the 4th, 7th, 9th months of development and neonatal period; for the internal carotid arteries – for the whole months of development.

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“…Right internal carotid artery agenesis (ICA) is a developmental anomaly by the 24 mm embryonal stage [1] [2]. It is consistent with interrupted embryonic development of the ICA associated with absence of the ipsilateral carotid canal [3].…”

Section: Introductionmentioning

confidence: 99%

Agenesis of Internal Carotid Artery and Ischemic Stroke, One Case Report: A Review of Literature

Jennifer¹,

Martinez²,

Desbordes³

et al. 2018

OALib

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Background: Agenesis of the internal carotid artery (ICA) is a rare anatomic variation of the cerebral circulation. A malfunction during the embryonic period is at stake. It is very often asymptomatic and therefore discovered incidentally. Association with ischemic stroke is exceptional. Physiopathology is uncertain; the hypothesis of a blood flow reversal is reported in the literature. The diagnosis is based on the absence of a carotid canal as revealed by CT scans at skull base level with bone settings. Other non-invasive techniques, including echo-Doppler of the neck vessels, can now make the diagnosis. Objective: Discuss the association between occurrence of an ischemic stroke in the left posterior sylvian territory and discovery of ipsilateral carotid agenesis. Case report: A 24-year-old female patient was prospectively recruited at DAX hospital center (France). Vascular risk factors involved active smoking of 8 pack-years and a combined estrogen/progestin contraceptive. Her family history included an uncle with heterozygote Factor V Leiden mutation. She presented a left upper limb sensorimotor deficit. Nuclear Magnetic Resonance Angiography (MRA) revealed a right superficial sylvian ischemic stroke associated with agenesis of the right internal carotid artery. CT scan at skull base level with bone settings showed absence of a right carotid canal, thus confirming agenesis. An opinion was then requested for an arteriography which showed an operative polygon of Willis, a sylvian artery or middle cerebral artery (MCA) irrigated by a very large right posterior communicating artery (PCOM) and the left anterior cerebral artery (ACA) supplied by the anterior communicating artery (ACOM), through the left carotid system. The right sylvian territory where stroke occurred was therefore supplied by the functional vertebrobasilar system. ECG and four-day meticulous monitoring detected no cardiac rhythm disorders.

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Unilateral agenesis of the internal carotid artery presented as transient ischaemic attack: a case report

Cited by 13 publications

References 6 publications

Computed tomography angiography of unilateral agenesis of the internal carotid artery: 2 cases report with focus on embryology, collateral pathways, and imaging

Computed tomography angiography of unilateral agenesis of the internal carotid artery: 2 cases report with focus on embryology, collateral pathways, and imaging

Peculiarities of organometric parameters of the coronary arteries in the perinatal period of ontogenesis

Agenesis of Internal Carotid Artery and Ischemic Stroke, One Case Report: A Review of Literature

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