TitleAberrant right subclavian artery: a rare cause of stridor in infants Authors Mohammad Alashqar* 1, Israa salman (1,2), Seba Lubbadeh 1, Osayd khasati 1, Shahd Saadeh 1Affiliations 1 Faculty of Medicine and Health Sciences, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine. 2 Pediatrics and Neonatology, Tulkarim Governmental Hospital, Tulkarim, PSECorrespondence: Mohammad Alashqar, Email: mohammad_20012011@icloud.comAbstract Aberrant right subclavian artery with a left aortic arch is relatively rare, however it is the most common congenital aortic arch anomaly. It might appear as an incidental finding later in life or as symptomatic at a young age. We report a case of a 3-month and 15-day-old newborn who presented with worsening stridor. She underwent a comprehensive evaluation, which included laryngoscopy, chest imaging, and a neck and chest CT scan, ultimately leading to the identification of the aberrant right subclavian artery. Early detection is critical to avoiding consequences associated with airway obstruction.Keywords: vascular ring, laryngomalacia, respiratory distress, aberrant right subclavian artery, stridor