Isolated persistent left superior vena cava in adults: A case report and brief literature review

Abstract

Abstract Background Isolated persistent left superior vena cava is an extremely rare congenital anomaly. Due to abnormal venous drainage, isolated persistent left superior vena cava is often associated with abnormalities in the cardiac conduction system, leading to rapid or slow arrhythmias. Case presentation: We report a 37-year-old asymptomatic male patient who accidentally discovered isolated persistent left superior vena cava through chest echocardiography during routine physical examination. The patient has no history of cyanosis, breathing difficulties, chest pain, or family history of heart disease. Conclusions Although isolated persistent left superior vena cava patients are often asymptomatic in the early stages, it may increase the risk of central venous access, cardiothoracic surgery, and pacemaker implantation. Noninvasive echocardiography can provide a basis for early diagnosis of asymptomatic patients and has certain clinical significance.