Incidental right atrial mass in a patient with secondary pancreatic cancer: A case report and review of literature

Table 3 Differential features between thrombus and tumor atrial masses by echocardiography

Thrombus	Tumor
Smaller size	Larger size
Single lesion	Single lesion (benign tumor)
	Multiple lesions (malignant tumor)
Mostly left atrium/left ventricle	Left atrium (benign tumor)
	Right atrium/multiple chambers/pulmonary artery trunk (malignant tumor)
Homogeneous tissue pattern, areas of lysis, “donut hole” appearance	Heterogeneous tissue pattern, irregular and patchy texture, areas of echolucency
Highly mobile and serpiginous	Not mobile
Broad based attachment	Attached by a stalk
Absence of intramass calcifications	Intramass calcifications, ossification, hemorrhage
Not infiltrating adjacent tissues	Intracardiac/extracardiac infiltration
Avascular	Vascularized
Poorly defined borders	Lobulated margins, definite edges
Absence of pericardial effusion	Associated pericardial effusion
Absence of metastases	Metastases may be present