*Abnormalities, Multiple/radiography ; Basilar Artery/*abnormalities ; Basilar Artery/radiography ; Carotid Artery, Internal/radiography ; Intracranial Aneurysm/*complications ; Intracranial Aneurysm/radiography ; Vertebral Artery/radiography

We present here two patients that had an aberrant right subclavian artery and an anomalous origin of the right vertebral artery from the right common carotid artery. We review the previous literature and discuss herein the embryologic mechanism and clinical implications of this variation.
Adult ; Aged ; Carotid Artery, Common/*abnormalities/radiography ; Female ; Humans ; Male ; Subclavian Artery/*abnormalities/radiography ; Tomography, X-Ray Computed ; Vertebral Artery/*abnormalities/radiography

Abnormalities, Multiple ; diagnostic imaging ; Basilar Artery ; abnormalities ; diagnostic imaging ; Carotid Artery, Internal ; diagnostic imaging ; Humans ; Intracranial Aneurysm ; complications ; diagnostic imaging ; Male ; Middle Aged ; Radiography ; Vertebral Artery ; diagnostic imaging

Turner syndrome is well known to be associated with significant cardiovascular abnormalities. This paper studied the incidence of cardiovascular abnormalities in asymptomatic adolescent patients with Turner syndrome using multidetector computed tomography (MDCT) instead of echocardiography. Twenty subjects diagnosed with Turner syndrome who had no cardiac symptoms were included. Blood pressure and electrocardiography (ECG) was checked. Cardiovascular abnormalities were checked by MDCT. According to the ECG results, 11 had a prolonged QTc interval, 5 had a posterior fascicular block, 3 had a ventricular conduction disorder. MDCT revealed vascular abnormalities in 13 patients (65%). Three patients had an aberrant right subclavian artery, 2 had dilatation of left subclavian artery, and others had an aortic root dilatation, aortic diverticulum, and abnormal left vertebral artery. As for venous abnormalities, 3 patients had partial anomalous pulmonary venous return and 2 had a persistent left superior vena cava. This study found cardiovascular abnormalities in 65% of asymptomatic Turner syndrome patients using MDCT. Even though, there are no cardiac symptoms in Turner syndrome patients, a complete evaluation of the heart with echocardiography or MDCT at transition period to adults must be performed.
Adolescent ; Blood Pressure ; Cardiovascular Abnormalities/complications/epidemiology ; Electrocardiography ; Humans ; Karyotyping ; Multidetector Computed Tomography ; Prevalence ; Turner Syndrome/complications/*diagnosis/radiography ; Vascular Malformations/complications/epidemiology ; Vertebral Artery/abnormalities ; Young Adult

Bilateral carotid and vertebral rete mirabile (CVRM) is a very rare condition. We report a new case of CVRM initially detected by magnetic resonance imaging (MRI) of the cervical spine. MRI demonstrated tortuous vascular signal voids limited to the anterior cerebrospinal fluid space mimicking spinal dural arteriovenous fistula. A diagnosis of CVRM was confirmed on the basis of angiographic findings of rete formation associated with bilateral aplasia of the cavernous internal carotid and vertebral arteries without abnormal arteriovenous connection.
Adult ; Carotid Arteries/*abnormalities/pathology/radiography ; Central Nervous System Vascular Malformations/*diagnosis ; Cervical Vertebrae/pathology ; Humans ; *Magnetic Resonance Imaging ; Male ; Tomography, X-Ray Computed ; Vertebral Artery/*abnormalities/pathology/radiography