A case of right internal carotid agenesis with associated transcavernous anastomosis revealed by transient ischemic attack

Hébant, Benjamin; Gérardin, Emmanuel; Delpierre, C.; Mereaux, Jean-Loup; Quesney, Gérald; Lefaucheur, Romain

doi:10.1007/s00276-019-02318-4

Cited by 6 publications

(6 citation statements)

References 10 publications

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“…According to the study results of Jesse et al, [8] the incidence of intracranial aneurysms was approximately 2% to 4% in the general population but as high as 25% to 43% in patients with congenital absence of the ICA, which might be caused by congenital dysplasia of the vascular wall or abnormal hemodynamics. [1,9] Therefore, early and accurate diagnosis of congenital absence of the ICA and regular monitoring of the formation and development of intracranial aneurysms are important for preventing cerebral hemorrhage and subarachnoid hemorrhage. [10] CDUS is the most commonly used screening tool for cervical vascular diseases.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, because the ICA forms earlier than the skull base, CT of the skull base can also assist in the diagnosis of congenital absence of the ICA if the bony carotid canal is maldeveloped or not developed. [9] As a noninvasive and rapid screening tool for cervical vascular diseases, CDUS offers a new approach for the diagnosis of congenital absence of the ICA. When maldevelopment of the CCA is found on 1 side and pulsed Doppler shows that the blood flow velocity and Doppler spectrum are normal and the ipsilateral ICA is not present, congenital absence of the ICA should be considered.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The ambiguous “internal carotid artery”–Ultrasound diagnosis of congenital absence of the internal carotid artery: A case report and review of the literature

Ning,

Zhong,

Long

et al. 2023

Medicine

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Rationale: Congenital anatomical variation of internal carotid artery (ICA) rarely occurs, and congenital absence of the ICA is even rarer. Few reports are available on the diagnosis of congenital absence of the ICA by carotid doppler ultrasound (CDUS), and most cases have been identified by computed tomographic angiography (CTA) or digital subtraction angiography (DSA). Patient concerns: A 61-year-old male was admitted to our hospital due to dizziness for more than half a month. He was hypertensive and had been drinking and smoking for many years. Diagnoses: The patient was diagnosed by carotid doppler ultrasound with congenital absence of the right ICA, confirmed by CTA and DSA. A nodular aneurysm in the anterior communicating artery was observed by CTA and DSA. Interventions: After relevant preoperative examinations were performed, the patient underwent right craniotomy and clipping of the aneurysm under general anesthesia 8 days after admission. Outcomes: The patient recovered well after surgery and no relapses has been observed. Lessons: Congenital absence of the ICA is rare and usually diagnosed by CTA or DSA in clinical practice. If radiologists do not have adequate knowledge about the associated ultrasonic characteristics, a missed diagnosis may occur. As a noninvasive and rapid screening tool for cervical vascular diseases, carotid doppler ultrasound offers a new approach for the diagnosis of congenital absence of the ICA.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The ambiguous “internal carotid artery”–Ultrasound diagnosis of congenital absence of the internal carotid artery: A case report and review of the literature

Ning,

Zhong,

Long

et al. 2023

Medicine

View full text Add to dashboard Cite

show abstract

“…Therefore, it was considered that the RICA was absent rather than occluded. In addition, because the ICA forms earlier than the skull base, CT of the skull base can also assist in the diagnosis of congenital absence of the ICA if the bony carotid canal is maldeveloped or not developed [7] .…”

Section: Discussionmentioning

confidence: 99%

“…In the present case, the RACA A1 was absent, the RACA was supplied by the LACA via the ACoA, and the RMCA was supplied by the LICA through an anastomotic branch between the cavernous sinuses; this corresponds to Type D in the Lie classi cation and is very rare. According to the study results of Jesse et al [6] , the incidence of intracranial aneurysms in the general population is approximately 2%-4%, while the incidence of intracranial aneurysms in patients with congenital absence of the ICA is as high as 25%-43%, which may be due to congenital dysplasia of the vascular wall or abnormal hemodynamics [7] . Therefore, early and accurate diagnosis of congenital absence of the ICA and regular monitoring of the occurrence and development of intracranial aneurysms are important for preventing cerebral hemorrhage and subarachnoid hemorrhage [8] .…”

Section: Discussionmentioning

confidence: 99%

The Ambiguous "Internal Carotid Artery" - Ultrasound Diagnosis of One Case of Congenital Absence of The Internal Carotid Artery

Gang¹,

Ning²,

Xie³

et al. 2021

Preprint

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Background Congenital absence of the internal carotid artery (ICA) is a very rare congenital anomaly of the ICA. Most reports in the literature are of individual cases, and most were diagnosed by computed tomographic angiography (CTA) or digital subtraction angiography (DSA). There are few reports on the diagnosis of congenital absence of the ICA by carotid Doppler ultrasound (CDUS). Case presentation: A 61-year-old male patient who was admitted to the hospital because of dizziness and showed no abnormality on CDUS conducted at another hospital. CDUS conducted at our hospital found maldevelopment of the right common carotid artery (RCCA) with normal a blood flow velocity and spectrum. A high-resistance frequency spectrum could be detected in the “ICA” that continued directly from the RCCA, and two adjacent small blood vessel branches were also observed. Superficial temporal artery tap and tracing of the courses of the small blood vessels confirmed that the RCCA directly continued to the external carotid artery (ECA). The final diagnosis was congenital absence of the ICA, which was confirmed during the clipping of an anterior communicating artery (ACoA) aneurysm. Conclusion CDUS, as a noninvasive and rapid screening tool for cervical vascular diseases, offers a new approach for the diagnosis of congenital absence of the ICA.

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Unilateral developmental absence of internal carotid artery with contralateral middle cerebral artery occlusion

et al. 2023

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A case of right internal carotid agenesis with associated transcavernous anastomosis revealed by transient ischemic attack

Cited by 6 publications

References 10 publications

The ambiguous “internal carotid artery”–Ultrasound diagnosis of congenital absence of the internal carotid artery: A case report and review of the literature

The ambiguous “internal carotid artery”–Ultrasound diagnosis of congenital absence of the internal carotid artery: A case report and review of the literature

The Ambiguous "Internal Carotid Artery" - Ultrasound Diagnosis of One Case of Congenital Absence of The Internal Carotid Artery

Unilateral developmental absence of internal carotid artery with contralateral middle cerebral artery occlusion

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