HU Miao-yang, HE Bei, LI Jie, CAO Rong-rong, CHENG Hao, YAN Qun, DU Hong-yu, YI Fu. Radiofrequency ablation of atrial flutter via the internal jugular vein approach in a patient with absence of the retrohepatic inferior vena cava and persistent left superior vena cava: a case reportJ. Chinese Heart Journal, 2026, 38(2): 247-249. DOI: 10.12125/j.chj.202502047