Lipoma of the Interatrial Septum in a Patient With Chronic Atrial Fibrillation: A Case Report. - Korantzopoulos, Panagiotis; Patsouras, Dimitrios; Kountouris, Evaggelos; Voukelatou, Maria; Charaktsis, Loannis; Zakkas, Fotios; Siogas, Konstantinos (Angiology, 2006)