Table 5.

Structural and echocardiographic features of most common neoplasia

Neoplasms	Localization	Enhancement with contrast agents	Age of the patient	Echo features
Mixoma	LA (majority of cases) RA	Mild enhancement	Any age	Sessile, pedunculated, isoechoic, definite margins
Fibroelastoma	Valve structures	Depending on vascularization	Any age	Small size, endocardial attachment
Lipoma	Subendocardium, or pericardium or on cardiac valve structures	No enhancement	Any age	Broad based, immobile, no pedicle, well circumscribed
Rhabdomyoma	Ventricular walls, atrioventricular valves	Remarkable enhancement	<1 year old	Small, well-circumscribed isolated, or multiple nodules or a pedunculated mass
Sarcomas Angiosarcomas	LARA	Variable, not always significant enhancement	Any age	Broad-based heterogeneous echogenicity; hypoechogenic areas may indicate tumor necrosis
Lymphoma	Especially in the RA	Variable	Any age	Homogeneous, infiltrating masses leading to “wall thickening” or nodular masses

LA=Left atrium, RA=Right atrium