Left atrial myxoma. A case report.

Cardiac myxoma represents 30-50% of all benign tumours, 25% of all tumours and cysts of heart, usually are solitary and develop in the atria, 75% originating from the left atrium and 1520% from the right atrium. These tumours arise from or near the interatrial septum at the border of the fossa ovalis membrane and occur in all age groups, most frequently between the third and sixth decade. Myxomas are typically pedunculated with a stalk that is attached to the interatrial septum in fossa ovalis region. Women are more commonly affected and myxomas usually occur sporadically but there are also familiar forms. In about 20% cases, myxomas are asymptomatic and are discovered as an incidental finding [3,4].