Figure 1a: Gross examination shows a gray tan mucoid lobulated mass, measuring 7x4x2 cm.
Figure 1b-c: Microscopic examination shows mass consisting of round, polygonal and stellate cells surrounded by abundant loose mucoid and myxoid stroma, mitoses, pleomorphism or necrosis are absent.
Figure 2a: Gross examination shows a sea-anemone-like light-tan soft mass, measuring 35x30x15 mm. Its base of attachment measured 10x8 mm.
Figure 2c-d: Microscopic examination shows long branching papillary fronds having avascular paucicellular cores of pink matrix and small round to elongated cells with eosinophilic cytoplasm,
and covered with single layers of flat or plump probable endothelial cells. The base is composed of cardiac myofibers and a low cellularity of wavy slender spindle cells. No blood vessels or polygonal cells are present within the papillae.
Figure 3a: The echocardiogram reveals mass-liked structure of right aortic valve (AV) groove which is attached to vis-ceral pericardium.
Figure 3b: Microscopic examination shows presence of mass made of mature fat cells infiltrating in interstitium and between bundles of myocardial fibers.
Figure 4a: The echocardiogram reveals left atrial mass.
Figure 4b: Gross examination shows consists of an calcified mass measuring 3 x 3 x 2 cm.
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