A doctor will listen to the heart with stethoscope. A "tumor plop" (a sound related to movement of the tumor), abnormal heart sounds, or a murmur similar to the mid-diastolic rumble of mitral stenosis may be heard. These sounds may change when the patient changes position. Right atrial<unk> ta rarely produce symptoms until they have grown to be at least 13 cm (about 5 inches) wide. Tests may include: * Echocardiogram and Doppler study * Chest x-ray * CT scan of chest * Heart MRI * Left heart angiography * Right heart angiography * ECG—may show atrial fibrillation Blood tests: * Blood tests: A FBC may show anemia and increased WBCs (white blood cells). The erythrocyte sedimentation rate (ESR) is usually increased. * Blood tests: A FBC may show anemia and increased WBCs (white blood cells). The erythrocyte sedimentation rate (ESR) is usually increased. File:Atrial<unk>  gsr.Echocardiogram of atrial<unk>  File:UOTW 31 - Ultrasound of the Week 1.Echocardiogram showing atrial<unk>  File:UOTW 31 - Ultrasound of the Week 2.Echocardiogram showing atrial<unk>  Image:Atrial<unk>  edge low mag.Atrial<unk>  and myocardium. H&E stain. Image:Atrial<unk>  low mag.Atrial<unk> . H&E stain. Image:Atrial<unk>  intermed mag.Atrial<unk> . H&E stain. Image:Atrial<unk>  edge high mag.Atrial<unk>  covered by endothelium. H&E stain.
Cardiac myxoma
Cardiac fibroma
Coronary artery aneurysm
Atrial fibrillation
Annuloaortic ectasia
Isolated atrial amyloidosis
Ventricular aneurysm
Odontogenic myxoma