Congenital Absence of the Internal Carotid Artery With Intercavernous Anastomosis

Guerreiro, Carla; Basílio, Gonçalo; Sequeira, Paulo

doi:10.1016/j.wneu.2020.07.129

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…[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. [11] It offers the advantages of high resolution, high safety, convenience and low cost and plays a significant role in the diagnosis of congenital dysplasia of the carotid artery.…”

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%

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

“…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%

“…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%

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

Gang

Ning

Long

et al. 2022

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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“…The carotid canal, which is found in the temporal bone, is a vital anatomical feature at the base of the skull. The ICA, the sympathetic nerve plexus, and the internal carotid venous plexus, a venous network encircling the ICA that connects to the cavernous sinus, are all carried through the carotid canal [ 1 ]. Congenital absence of the ICA is often associated with carotid canal atresia and ICA-related structural abnormalities, such as variations in the origin of the ophthalmic artery, pituitary hypoplasia, sympathetic nerve dysplasia, and the abnormal development of collateral circulation pathways is the result of the close relationship between the carotid canal and the ICA during embryonic development.…”

Section: Introductionmentioning

confidence: 99%

Absent right internal carotid associated with posterior cerebral artery aneurysm: A case report

AlQarni

Fatani

et al. 2022

Annals of Medicine &Amp; Surgery

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Congenital Absence of the Internal Carotid Artery With Intercavernous Anastomosis

Cited by 5 publications

References 4 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

Absent right internal carotid associated with posterior cerebral artery aneurysm: A case report

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