Lipomatous hypertrophy of the atrial septum (LHAS) was diagnosed on the basis of the typical morphology and location. LHAS is a benign hyperplasia of lipocytes in the atrial septum (more exactly ...

[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 ...