Cardiac Myxoma : Location
Location: Cardiac myxomas are usually located in the atria and project into the atrial chamber. Three-fourths are found in the left atrium as shown in this image. Most of the remainder arise in the right atrium. They are attached to the interatrial septum near the rim of fossa ovalis via a narrow stalk or a broad-based attachment. Non-septal sites within atrium include posterior left atrial wall, anterior wall and atrial appendage. Rare sites of involvement, including ventricles, inferior vena cava and valve leaflets or cusps, are usually seen in the setting of myxoma syndrome (Carney Complex). Any myxoma arising in an unusual site should be carefully examined to rule out myxoid sarcomas. Image courtesy of: Dr. Ibrahim Zardawi; used with permission.