Tumorile cardiopericardice Prof Dr Grigore Tinica, Dr. Lutea Mirela ...

Lipomatous hypertrophy of the atrial septum is demonstrated. A: A mild degree of accumulation of
lipomatous material is present (arrows). The fossa ovalis is characteristically spared. B: A more extreme
form of lipomatous hypertrophy is demonstrated (arrows). LA, left atrium; LV, left ventricle; RA, right
atrium; RV, right ventricle
A, Four-chamber echocardiograph of the heart from a 72-year-old woman with lipomatous hypertrophy of the atrial
septum. Lipomatous hypertrophy of the atrial septum in a heart from a 62-year-old man. B, The atrial septum
superior to the fossa ovale was measured to have a thickness greater than 3 cm (arrow). C, Hematoxylin and eosin
staining shows myocardium among mature and immature adipocytes and scant inflammatory cells (×400). D, Movat
pentachrome staining (×400) shows myocytes in red and associated excess collagen in yellow (arrow). D, Inset,
Chloracetate esterase staining shows the presence of mast cells (×400).
30