Single diverticulum of the right atrium is an exceedingly rare congenital malformation. We describe successful surgical resection in a 22-year-old asymptomatic woman with single right atrial diverticulum. An attempt is also made to throw light on the etiology and management of this disease entity.

Myxomas are the most common benign tumors of the heart. They can arise from any heart chamber, but have rarely been described as originating from the left atrial appendage. We describe a case of left atrial appendage myxoma mimicking a left atrial appendage thrombus, and presenting with microembolization to the coronaries.