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Surgical treatment of a giant cystic tumor of the atrioventricular nodal region

Department of Cardiothoracic Surgery, Taihe Hospital affiliated to YunYang Medical College, 29 South Renming Road, ShiYan, 442000, China

*Corresponding author. Tel.: +86719 8801440; fax: +86719 8801114.

E-mail address: GJL9988{at}yahoo.com.cn (Y. Ji).

Cystic tumor of the atrioventricular nodal region is a rare cardiac primary tumor that can cause heart blockage and sudden death. Antemortem diagnosis and successful excision of the atrioventricular nodal region are extremely rare. A 41-year-old woman who presented with dyspnea and palpitations is reported. Electrocardiography revealed third-degree atrioventricular block. Echocardiography showed a right atrial cystic mass attached to the interatrial septum. The patient underwent surgical excision of the mass. Histopathological findings were of a cystic tumor of the atrioventricular nodal region. Placement of a permanent pacemaker was required for complete heart blockage. A two-year follow-up has revealed no sign of recurrence. This is the first case to be reported in China.

Key Words: Atrioventricular block; Cystic tumor; Excision