title: A lost "pinball" in the left atrium.
authors.affiliation: Department of Internal Medicine, Seoul National University College of Medicine, Cardiovascular Center, Seoul National University Hospital, Seoul, South Korea.
authors.forename: Hyung-Kwan
authors.initials: HK
authors.lastname: Kim
authors.forename: Sung-A
authors.initials: SA
authors.lastname: Chang
authors.forename: Yong-Jin
authors.initials: YJ
authors.lastname: Kim
authors.forename: Dae-Won
authors.initials: DW
authors.lastname: Sohn
mesh_terms: D000792:Angiography; D000075202:Contraindications; D003937:Diagnosis, Differential; D004452:Echocardiography / Q000379:methods*; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000150:complications / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000175:diagnosis / Q000601:surgery; D011475:Prosthesis Failure; D012307:Risk Factors; D017131:Thrombectomy; D013927:Thrombosis / Q000150:complications / Q000175:diagnosis*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014694:Ventricular Outflow Obstruction / Q000175:diagnosis* / Q000209:etiology