Table 2.

Differential diagnosis table for cardiac bronchogenic cyst.

	Location	Morphology	TTE	CT	MRI
Intracardiac bronchogenic cyst	Right side of the heart	Round; well-defined; thin wall	Homogeneous, hypoechoic	Hypodense; enhanced wall; calcification; fatty tissue; mucus	T1: hypointense; T2: hyperintense; enhanced wall
Thrombosis	Left atrium and auricle; tumor thrombi mainly located in the right atrium	Multiform; poor mobile	Hyperechoic	Hypodense; no enhancement; tumor thrombi with enhancement	T1, T2, SSFP: homogeneous hypointense; no enhancement; tumor thrombi with enhancement
Myxoma	Left atrium	Lobulated; well-defined; mobile; a narrow pedicle	Heterogeneous echo	Heterogeneous density; cystic content; calcification	T1: heterogeneous intermediate; T2: heterogeneous hyperintense; heterogeneous enhancement
Papillary fibroelastoma	Valvular endocardium	Small; pedunculated; papillary; mobile	Hyperechoic	Hypodense; no significant enhancement	T1: intermediate; T2: hyperintense; uniform enhancement
Cardiac lymphangioma	pericardial space	Ill-defined	Heterogeneous echo; no vascular flow	Hypodense; no significant enhancement	T1: heterogeneous signal due to complex components; T2: hyperintense; no enhancement or heterogeneous enhancement
Metastasis	-	Multilocular	Isoechoic to hyperechoic; calcification	Isodense to myocardium; heterogeneous enhancement	T1: hypointense to isointense; T2: isointense to hyperintense; heterogeneous enhancement
Cardiac echinococcosis	left ventricular wall	Round; well-defined;	Homogeneous hypoechoic; no flow	Hypodense; no significant enhancement; calcification; solid component	T1: hypointense; T2: hyperintense; fibrous septa with low signal intensity; no or slight enhancement