Basilar vascular system supplied by only right proatlantal intersegmentary artery type 1 with aneurysm and left internal carotid occlusion: a case report and review from the literature.
Persistence of proatlantal artery (PA) is a rare condition. More than 40 cases were described in the literature. Aneurysm may involve the PA itself in approximately 2% of cases, most arising from the internal carotid artery (ICA) side of PA. This case was particular because the PA showed a saccular aneurysm on the posterior wall, probably due to atherosclerosis disease and other alterations: plaque ulcerative of ICA, occlusion of left ICA, and aberrant right VA.
Deparment of Advanced Biomediacal Sciences, University of Naples 'Federico II', Via S. Pansini no. 5, 80131 Naples, Italy.
Alessandro
A
Ferrone
Department of Internal and Experimental Medicine "Magrassi-Lanzara", Institute of Radiology, Second University of Naples, Naples, Italy.
Barbara
B
Brogna
Department of Vascular Radiology, AORN Cardarelli, Naples, Italy.
Raffaele
R
Giliberti
Department of Vascular Radiology, AORN Cardarelli, Naples, Italy.
Pasquale
P
Vassallo
Department of Vascular Radiology, AORN Cardarelli, Naples, Italy.
Giuseppe
G
De Magistris
Carotid vertebral anastomosis; Embryo; Proatlantal artery type 1