Myxomas are mainly located in the atria (75% in the left and 15–20% in the right) and are attached to the atrial septum, usually in the region of the rim of the fossa ovalis (Figures 2 & 3).

[18] They are a well-defined mass of mature fat, are well encapsulated and contain few myocytes in contrast to lipomatous hypertrophy, which is always found in the interatrial septum and is not ...