A vascular ring is a rare congenital anomaly encircling the trachea and esophagus by vascular structures, which may not be patent. One common form is a right aortic arch with aberrant left subclavian artery (RAA-ALSA), often arising from a diverticulum of Kommerell (DoK) and completed by a left ductus or ligamentum arteriosum. The DoK, an embryonic remnant of the left dorsal arch, may further compress the airway and esophagus. The aim of this study is to compare DoK morphology across intracardiac anatomic variants in RAA–ALSA patients, hypothesizing that intracardiac lesions altering fetal ductal flow impact DoK size, with right-obstructive lesions yielding a smaller DoK and left-obstructive lesions a larger DoK. Read More

Meeting name: SPR 2026 Annual Meeting , 2026

Authors: Ryu Young Hye, Kittichokechai Pakaparn, Gauvreau Kimberlee, Castellanos Daniel, Sasaki Nao

Keywords: Vascular Ring, Congenital Heart Disease, Aortic Arch Anomaly