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Case Reports
. 2005 Oct;26(9):2378-83.

Proatlantal intersegmental arteries of external carotid artery origin associated with Galen's vein malformation

Sukalyan Purkayastha  1 , Arun Kumar Gupta, Ravi Varma, T R Kapilamoorthy
Affiliations
Case Reports

Proatlantal intersegmental arteries of external carotid artery origin associated with Galen's vein malformation

Sukalyan Purkayastha et al. AJNR Am J Neuroradiol. 2005 Oct.

Abstract

Carotid basilar anastomoses can occasionally persist beyond the embryonic period. These anomalies are most often incidentally detected in adulthood, during workups for unrelated pathologies. Persistence of the proatlantal intersegmental arteries is a rare form of primitive carotid-basilar anastomoses. Bilateral proatlantal inter- segmental arteries are an extremely rare occurrence, of which only 3 cases have been reported in the literature. An analysis of vascular anomalies associated with Galen's vein malformations revealed 3 children in whom persistence of type II proatlantal arteries was seen. These included one child in whom proatlantal arteries were persistent bilaterally. We report the clinical and angiographic findings and discuss the embryologic and therapeutic implications of this unique association.

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Figures

F<sc>ig</sc> 1.
Fig 1.
Schematic diagram of the lateral and anteroposterior views show the origin of the proatlantal artery from the external carotid artery at the second vertebral body level. Occipital artery origin from proatlantal artery is seen.
F<sc>ig</sc> 2.
Fig 2.
Right vertebral artery injection lateral view angiogram shows filling of the Galen’s vein fistula and the falcine sinus.
F<sc>ig</sc> 3.
Fig 3.
Right internal carotid artery injection lateral view angiogram shows the filling of the fistula through the posterior communicating artery.
F<sc>ig</sc> 4.
Fig 4.
Left internal carotid artery injection lateral view angiogram shows the filling of the fistula through the posterior communicating artery.
F<sc>ig</sc> 5.
Fig 5.
Left vertebral artery injection lateral view angiogram shows the fistula filling from the thalamoperforator arteries.
F<sc>ig</sc> 6.
Fig 6.
Right external carotid artery injection lateral view angiogram shows the proatlantal artery.
F<sc>ig</sc> 7.
Fig 7.
Right external artery injection anteroposterior view angiogram shows the opacification of the proatlantal artery of the right side.
F<sc>ig</sc> 8.
Fig 8.
Left external carotid artery injection lateral view angiogram shows the filling of the vertebral artery via the left proatlantal artery.
F<sc>ig</sc> 9.
Fig 9.
Left external carotid artery injection anteroposterior view angiogram shows the proatlantal artery and the opacification of the vertebral artery.
F<sc>ig</sc> 10.
Fig 10.
Right common carotid artery injection angiogram shows the origin of the proatlantal artery and the filling of the vertebral artery (case 2).
See this image and copyright information in PMC

Comment in

  • Cervical arterial collateral network.
    Uchino A. Uchino A. AJNR Am J Neuroradiol. 2006 Jun-Jul;27(6):1161; author reply 1161. AJNR Am J Neuroradiol. 2006. PMID: 16775256 Free PMC article. No abstract available.

References

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    1. Tsai FY, Mahon J, Woodruff JV, Roach JF. Congenital absence of bilateral vertebral arteries with occipital-basilar anastomosis. AJR Am J Roentgenol 1975;124 ;281–286 - PubMed
    1. Lui CC, Liu YH, Wai YY, Tsai CC. Persistence of both proatlantal arteries with absence of vertebral arteries. Neuroradiology 1987;29:304–305 - PubMed
    1. Dilenge A, Heon M. The internal carotid artery. In: Newton TPD, ed. Radiology of the skull and brain. St. Louis, MO: Mosby-Year Book;1974. :1238–1245

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