Idiopathic Polymorphic Right Ventricular Outflow Tachycardia Developed after a Long-term Follow-up of Benign Premature Ventricular Contractions with a Normal Structural Heart

Toshiaki Kan1), Yoko Yoshida1), Shuichiro Yoshida1), Tsugutoshi Suzuki1), Takeshi Sasaki2), Mitsuhiro Fujino2), Tomohiro Hirano2), Yuki Kawasaki2), Eiji Ehara2), Yosuke Murakami2), and Yoshihide Nakamura1, 3) 1) Department of Pediatric Electrophysiology, Osaka City General Hospital, Osaka, Japan 2) Department of Pediatric Cardiology, Osaka City General Hospital, Osaka, Japan 3) Department of Pediatrics, Kinki University, Osaka, Japan