Right atrial aneurysm with downward displacement of the anterior leaflet that resembled Ebstein's anomaly.
A 13-year-old boy presented with right atrial aneurysm and downward displacement of the anterior leaflet in the tricuspid valve into the right ventricle, without tricuspid valve regurgitation. Paroxysmal atrial flutter was caused by an abnormal electrical re-entry circuit, which could not be treated using catheter radiofrequency ablation. Therefore, the patient underwent surgical ablation and resection of the enlarged right atrial wall. The anterior leaflet of the tricuspid valve was plastered and displaced downward into the right ventricle, which resembled Ebstein's anomaly. Pathological evaluation revealed a thin wall that contained fibrous tissue with lipomatous degeneration and few muscular elements. No postoperative arrhythmia was observed.
Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan. sanae-y@nyc.odn.ne.jp.
Sanae
S
Yamauchi
Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan.
Yasuyuki
Y
Suzuki
Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan.
Kazuyuki
K
Daitoku
Department of Cardiology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Masaomi
M
Kimura
Department of Cardiology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan.
Ken
K
Okumura
Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifucho, Hirosaki, Aomori, 036-8562, Japan.
Ikuo
I
Fukuda
D000293:Adolescent; D006348:Cardiac Surgical Procedures / Q000379:methods*; D017115:Catheter Ablation / Q000379:methods; D004437:Ebstein Anomaly / Q000175:diagnosis* / Q000601:surgery; D004452:Echocardiography; D006322:Heart Aneurysm / Q000175:diagnosis* / Q000601:surgery; D006325:Heart Atria; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed
Ablative therapy; Atrial flutter; Ebstein’s anomaly; Right atrial aneurysm; Tricuspid valve