Lipoma of the heart in a child clinical, echocardiographic, angiographic, and pathological features.

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Abstract
A 7 yr old boy presented with intermittent systolic murmur and syncope. Chest roentgenogram revealed mild cardiomegaly. ECG showed right bundle branch block and abnormal T-waves. Right ventricular angiography demonstrated a filling defect at the anterior portion of the right ventricular cavity and histological examination of biopsy specimen revealed lipoma. At operation, the tumor could not be totally resected. Histological examination of surgical specimen showed marked proliferation of mature fat cells between cardiac muscle fibers. Postoperatively he remained asymptomatic. Postoperative standard M-mode and 2-dimensional echocardiogram demonstrated a mass from right ventricular wall, abnormal motion of the interventricular septum and small left atrial cavity. The patient was followed by serial echocardiography.