An intrapericardial aneurysm of the left atrial wall in a 28-year-old
man is reported. This is a rare congenital anomaly. The patients are u
sually identified by clinical signs, when complications such as cardia
c arrhythmias and systemic embolism occur. Clinical findings including
the ECG are nonspecific. Cardiomegaly and unusual configuration of th
e heart are consistantly found, but are not pathognomonic. The diagnos
is is usually confirmed by angiocardiography. Echocardiography, comput
ed tomography and/or MRI can contribute to the diagnosis. Operation se
ems to be indicated if complications are to be avoided.