30 July 2018 : Case report
Nonbifurcating Carotid Artery: A Case Report with a Review of Embryogenesis
Congenital defects / diseasesCheng-Chuan Hu12BDEF, Yen-Jun Lai13ABDFG*, Wei-Jen Lai13CDE
Am J Case Rep 2018; 19:891-895
BACKGROUND: Vascular anomalies of the carotid vessels can be attributed to false embryogenesis. A rare variant called a nonbifurcating carotid artery (NBCA) exists, where typical carotid bifurcation is not recognizable with its typical branches of the external carotid artery (ECA) and internal carotid artery (ICA). This paper describes a case of this anomaly and reviews the embryogenesis of the carotid arteries for explanation.
CASE REPORT: A 66-year-old man received a routine health examination at our hospital. Initial carotid ultrasound indicated an absence of bifurcation in the right cervical carotid artery, and magnetic resonance imaging of the brain indicated an absence of the proximal cervical segment of the right ICA, with a remnant arterial stump at the expected bifurcation level. No evidence of the carotid bulb was identified. The common carotid artery seemed to continue cranially in the trunk of the ECA, where it exhibited extracranial branches. After distributing these branches, the carotid artery coursed medially at the C2 level, where it ascended into the carotid canal to become the petrosal segment of the ICA. This carotid anomaly was labelled an NBCA. No aberrant intracranial arteries were derived from the NBCA in this case.
CONCLUSIONS: In this case, the arterial stump was considered a remnant from agenesis of the right ICA. We assumed that the NBCA most likely developed because of false regression of the third embryogenic aortic arch with persistence of the second aortic arch.
Keywords: Cardiovascular System, Carotid Arteries, Embryology
05 Jun 2023 : Case reportSuccessful Treatment of Recurrent Colonic Adenocarcinoma with Metastatic Tumor Thrombus in the Superior Mes...
Am J Case Rep In Press; DOI: 10.12659/AJCR.939156
05 Jun 2023 : Case reportDelayed Right Ventricular Pacemaker Lead Perforation 9 Years After Implantation
Am J Case Rep In Press; DOI: 10.12659/AJCR.940291
05 Jun 2023 : Case reportAn 81-Year-Old Man Presenting with Asthenia and Anorexia After an Alcohol-Induced Hypoglycemic Coma and a D...
Am J Case Rep In Press; DOI: 10.12659/AJCR.939840
02 Jun 2023 : Case reportSingle Pterional Burr Hole Coupled with Coagulation of the Middle Meningeal Artery for Management of a Chro...
Am J Case Rep In Press; DOI: 10.12659/AJCR.940045
Most Viewed Current Articles
06 Dec 2021 : Case reportLipedema Can Be Treated Non-Surgically: A Report of 5 Cases
Am J Case Rep 2021; 22:e934406
13 Jul 2022 : Case reportWhistling Scrotum: An Unusual Presentation of Pneumomediastinum in the Setting of an Open Scrotal Wound
Am J Case Rep 2022; 23:e936441
07 Dec 2021 : Case reportEdwardsiella tarda: A Classic Presentation of a Rare Fatal Infection, with Possible New Background Risk Fac...
Am J Case Rep 2021; 22:e934347
23 Feb 2022 : Case reportPenile Necrosis Associated with Local Intravenous Injection of Cocaine
Am J Case Rep 2022; 23:e935250