Özet:

Left atrial appendage aneurysm (LAAA) is a rare cardiac anomaly, the association with right ventricular diverticulum (RVD) is extremely rare. LAAA is characterized by aneurysmal dilatation of left atrial may be congenital or acquired  RVD is an outpouching from the right cardiac chamber. Often fortuitous discovery between fetal period and adult age, these two entities are usually asymptomatic but can be complicated by arrythmia and thrombo- embolism. We report the case of a 22- years old which we have diagnosed LAAA associated with a RVD. The  revelation mode was a pericardial effusion and the mechanism of pericardial effusion would be a pericardial dysgenesis or an inflammatory reaction.The diagnosis of these two anomalies is essentielly posed by imagery test especially cardiac echography, cardiac RMI and scan. Treatment consists of resection of LAAA and RVD with pericardiocentesis.

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