摘要
INTRODUCTION Congenital vascular rings （VRs） are a group of rare cardiovascular anomalies that result from abnormal embryonic development of the paired aortic arches or branching pulmonary arteries. Clinical presentation of VR depends on its anatomy, degree, and site of compression.
INTRODUCTION Congenital vascular rings （VRs） are a group of rare cardiovascular anomalies that result from abnormal embryonic development of the paired aortic arches or branching pulmonary arteries. Clinical presentation of VR depends on its anatomy, degree, and site of compression.
