(a)
(b)
(c)
(d)

Figure 1: Macroscopic appearance of the lesion observed at autopsy (a) and histological overview showing extensive fat entrapping cardiomyocytes from atrial lesion of the first case (b) and from the interatrial septum of the second (c-d). Haematoxylin and Eosin 10X (b-c); Haematoxylin and Eosin 20X (d).