Year : 2002 | Volume
: 12 | Issue : 1 | Page : 103--104
Idiopathic enlargement of left atrial appendage
J Auer, R Berent, R Zisch, T Weber, E Lassnig, B Eber
|How to cite this article:|
Auer J, Berent R, Zisch R, Weber T, Lassnig E, Eber B. Idiopathic enlargement of left atrial appendage.Indian J Radiol Imaging 2002;12:103-104
|How to cite this URL:|
Auer J, Berent R, Zisch R, Weber T, Lassnig E, Eber B. Idiopathic enlargement of left atrial appendage. Indian J Radiol Imaging [serial online] 2002 [cited 2020 Jul 4 ];12:103-104
Available from: http://www.ijri.org/text.asp?2002/12/1/103/30551
A 42-year-old asymptomatic man was referred to the cardiology clinic because of a suspected pericardial cyst detected by echocardiography performed routinely before starting antiviral therapy for chronic type C hepatitis. Cardiovascular examination was unremarkable and ECG showed normal sinus rhythm with no abnormalities on repolarization. Transthoracic echocardiogram (apical four-chamber view) revealed a "cyst-like lesion" attached to the anterolateral wall of the left ventricle ([Figure 1]; RV=right ventricle, LV=left ventricle, RA= right atrium, LA= left atrium) with no signs of ventricular compression. Color doppler echocardiography demonstrated blood flow from the left atrium into the "cyst-like lesion" ([Figure 2]; parasternal short axis view; RV=right ventricle, LOT=left ventricular outflow tract, LA=left atrium, LAA=left atrial appendage). Projection imaging of contrast-enhanced cardiac magnetic resonance tomography showed significant aneurysm-like enlargement of the left atrial appendage ([Figure 3]; arrow indicates enlarged LAA) with otherwise normal anatomy of the heart.
Congenital idiopathic enlargement of an atrial appendage (congenital atriomegaly) represents a very rare condition ,,, and patients with this variation are more prone to thrombus formation and supraventricular arrhythmias. Unusually enlarged atrial appendages have to be considered with intrapericardial "cyst-like" lesions.
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