Table 1.

The table summarizes normal structures in the atria that can simulate pathology and how to avid misinterpretations.

Cardiac chambers	Normal structures	Mimickers	Remarks
Right atrium	Prominent pectinate muscle	Tumor or thrombus	Re-evaluation on MPR
	Prominent crista terminalis	Tumor or thrombus	Re-evaluation on MPR
	Prominent Eustachian and Thebesian valves	Tumor or thrombus	Re-evaluation on MPR
Left atrium	Prominent Ligament of Marshall, Pectinate muscle	Tumor or thrombus	Re-evaluation on MPR
	Slugglish flow in left atrial appendage	Thrombus	Repeat delayed scan at 30 s or further investigate with echocardiogram
	Normal thinning of interatrial septum	ASD	Further evaluation with echocardiogram or MRI
	Lipomatous hypertrophy of interatrial septum with spared fossa ovalis	ASD	Further evaluation with echocardiogram or MRI
	Patent foramen ovale	ASD	Further evaluation with echocardiogram or MRI