Lipomatous hypertrophy of interatrial septum, usually found in echocardiography, is a rare non-neoplastic disease entity, which may cause arrhythmia or sudden death.

• 摘要脂肪性心房中隔肥大症并非真正的肿瘤，它相当罕见，通常于超音波检查时偶然发现，主要的临床表现为心率不整、可导致病人猝死。