ABSTRACT
La carótida interna aberrante es una rara malformación congénita. Se presenta el caso de una paciente pediátrica con esta alteración como hallazgo durante la evaluación por imágenes, complementaria de una patología otorrinolaringológica frecuente.
The deviant internal carotid is a unusual congenital malformation. The case of a pediatric patient with this alteration is presented. The finding was made during a rutine image assesment of an ENT disease.
Subject(s)
Humans , Female , Child, Preschool , Carotid Arteries/abnormalities , Carotid Artery Diseases/congenital , Carotid Artery Diseases/diagnosis , Carotid Arteries , Carotid Artery Diseases/embryology , Carotid Artery Diseases , Magnetic Resonance Imaging , Tomography, X-Ray ComputedABSTRACT
PURPOSE: The goal of this study was to directly measure the association between the internal carotid artery (ICA) morphometry and the presence of ICA-posterior communicating artery (PCOM) aneurysm. MATERIALS AND METHODS: The authors intraoperatively measured the length of the supraclinoid ICA because it is impossible to radiologically determine the exact location of the anterior clinoid process. We used an image analyzer with a CT angiogram to measure the angle between the skull midline and the terminal segment of the ICA (ICA angle), as well as the diameter of the ICA. The lengths and diameters of the supraclinoid ICA and the ICA angle were compared among PCOM aneurysms, anterior communicating artery (ACOM) aneurysms, and middle cerebral artery (MCA) bifurcation aneurysms (n=27 each). Additionally, the lengths and the diameters of M1 and A1 were compared for each aneurysm. RESULTS: The lengths of the supraclinoid ICA were 11.9+/-2.3mm. The lengths of the supraclinoid ICA in patients with ICA-PCOM aneurysms (9.7+/-2.8mm) were shorter than those of patients with ACOM aneurysms (13.8+/-2.2mm, Student's t-test, p<0.001) and with MCA bifurcation aneurysms (12.2+/-1.9 mm, Student's t-test, p<0.001). The diameters of the supraclinoid ICA and A1 in patients with ACOM aneurysms were larger than those in patients with MCA bifurcation aneurysms (Student's t-test, p<0.05). There were no significant differences in the lengths of M1 and A1, ICA angle, or diameter of M1 for each aneurysm. CONCLUSION: These results suggest that the relatively shorter length of the supraclinoid ICA may be a novel risk factor for the development of ICA-PCOM aneurysm with higher hemodynamic stress.