Persistent fetal carotid-basilar anastomosis with course from internal carotid artery (ICA) or external carotid artery (ECA) to basilar artery at C1 level
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Selected References
Choudhary G et al: Type 2 persistent primitive proatlantal intersegmental artery, a rare variant of persistent carotid-vertebrobasilar anastomoses. Proc (Bayl Univ Med Cent). 32(1):101-4, 2019
Uchino A: Carotid-vertebrobasilar anastomosis: magnetic resonance and computed tomographic angiographic demonstration. Jpn J Radiol. 37(8):565-78, 2019
Choi Y et al: A Type 1 Persistent proatlantal artery originating from the external carotid artery detected by computed tomographic angiography. J Cerebrovasc Endovasc Neurosurg. 20(4):231-4, 2018
Cappabianca S et al: Extracranial internal carotid artery: anatomical variations in asymptomatic patients. Surg Radiol Anat. 38(8):893-902, 2016
OʼDonnell CM et al: Vertebral artery anomalies at the craniovertebral junction in the US population. Spine (Phila Pa 1976). 39(18):E1053-7, 2014
Cao YH et al: Proatlantal intersegmental artery with absence of the common carotid artery. Clin Neurol Neurosurg. 113(3):245-6, 2011
Tubbs RS et al: Persistent fetal intracranial arteries: a comprehensive review of anatomical and clinical significance. J Neurosurg. 114(4):1127-34, 2011
Dimmick SJ et al: Normal variants of the cerebral circulation at multidetector CT angiography. Radiographics. 29(4):1027-43, 2009
Li TH et al: Type II proatlantal intersegmental artery associated with objective pulsatile tinnitus. Neurology. 71(4):295-6, 2008
Purkayastha S et al: Proatlantal intersegmental arteries of external carotid artery origin associated with Galen's vein malformation. AJNR Am J Neuroradiol. 26(9):2378-83, 2005
Grego F et al: Primitive proatlantal intersegmental artery and carotid endarterectomy. J Vasc Surg. 39(3):691, 2004
Gumus T et al: Bilateral persistence of type 1 proatlantal arteries: report of a case and review of the literature. AJNR Am J Neuroradiol. 25(9):1622-4, 2004
Woodcock RJ et al: Bilateral type 1 proatlantal arteries with absence of vertebral arteries. AJNR Am J Neuroradiol. 22(2):418-20, 2001
Bahsi YZ et al: Persistent primitive proatlantal intersegmental artery (proatlantal artery I) results in 'top of the basilar' syndrome. Stroke. 24(12):2114-7, 1993
Tanaka Y et al: Proatlantal intersegmental artery and trigeminal artery associated with an aneurysm. Case report. J Neurosurg. 59(3):520-3, 1983
Obayashi T et al: The proatlantal intersegmental artery: a case report and review of the literature. Arch Neurol. 37(6):387-9, 1980
Bloch S et al: Proatlantal intersegmental artery. Neuroradiology. 7(1):5-8, 1974
Persistent fetal carotid-basilar anastomosis with course from internal carotid artery (ICA) or external carotid artery (ECA) to basilar artery at C1 level
IMAGING
General Features
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Demographics
Selected References
Choudhary G et al: Type 2 persistent primitive proatlantal intersegmental artery, a rare variant of persistent carotid-vertebrobasilar anastomoses. Proc (Bayl Univ Med Cent). 32(1):101-4, 2019
Uchino A: Carotid-vertebrobasilar anastomosis: magnetic resonance and computed tomographic angiographic demonstration. Jpn J Radiol. 37(8):565-78, 2019
Choi Y et al: A Type 1 Persistent proatlantal artery originating from the external carotid artery detected by computed tomographic angiography. J Cerebrovasc Endovasc Neurosurg. 20(4):231-4, 2018
Cappabianca S et al: Extracranial internal carotid artery: anatomical variations in asymptomatic patients. Surg Radiol Anat. 38(8):893-902, 2016
OʼDonnell CM et al: Vertebral artery anomalies at the craniovertebral junction in the US population. Spine (Phila Pa 1976). 39(18):E1053-7, 2014
Cao YH et al: Proatlantal intersegmental artery with absence of the common carotid artery. Clin Neurol Neurosurg. 113(3):245-6, 2011
Tubbs RS et al: Persistent fetal intracranial arteries: a comprehensive review of anatomical and clinical significance. J Neurosurg. 114(4):1127-34, 2011
Dimmick SJ et al: Normal variants of the cerebral circulation at multidetector CT angiography. Radiographics. 29(4):1027-43, 2009
Li TH et al: Type II proatlantal intersegmental artery associated with objective pulsatile tinnitus. Neurology. 71(4):295-6, 2008
Purkayastha S et al: Proatlantal intersegmental arteries of external carotid artery origin associated with Galen's vein malformation. AJNR Am J Neuroradiol. 26(9):2378-83, 2005
Grego F et al: Primitive proatlantal intersegmental artery and carotid endarterectomy. J Vasc Surg. 39(3):691, 2004
Gumus T et al: Bilateral persistence of type 1 proatlantal arteries: report of a case and review of the literature. AJNR Am J Neuroradiol. 25(9):1622-4, 2004
Woodcock RJ et al: Bilateral type 1 proatlantal arteries with absence of vertebral arteries. AJNR Am J Neuroradiol. 22(2):418-20, 2001
Bahsi YZ et al: Persistent primitive proatlantal intersegmental artery (proatlantal artery I) results in 'top of the basilar' syndrome. Stroke. 24(12):2114-7, 1993
Tanaka Y et al: Proatlantal intersegmental artery and trigeminal artery associated with an aneurysm. Case report. J Neurosurg. 59(3):520-3, 1983
Obayashi T et al: The proatlantal intersegmental artery: a case report and review of the literature. Arch Neurol. 37(6):387-9, 1980
Bloch S et al: Proatlantal intersegmental artery. Neuroradiology. 7(1):5-8, 1974
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