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Year : 2002  |  Volume : 12  |  Issue : 1  |  Page : 103-104
Idiopathic enlargement of left atrial appendage


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Keywords: Left Atrial appendage, Colour Doppler echocardiography

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;12:103-4

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 2019 Nov 12];12:103-4. 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 [1],[2],[3],[4] 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.

 
   References Top

1.Godwin TF, Auger P, Key JA, Wigle ED. Intrapericardial aneurysmal dilatation of the left atrial appendage. Circulation 1968;37:397-401.  Back to cited text no. 1  [PUBMED]  
2.Hansen JF, Rygg I, Efsen F. Intrapericardial left atrial aneurysm. Report of a case and review of the literature. Am Heart J 1974;87:113  Back to cited text no. 2    
3.Coselli JS, Beall AC Jr, Ziaddi GM. Congenital intrapericardial aneurysmal dilatation of the left atrial appendage. Ann Thorac Surg 1985;39:466-7.   Back to cited text no. 3  [PUBMED]  
4.Singh H, Gujral JS, Suri RK, Wahi PL. Giant left atrial appendage. Indian Heart J 1976;28:194-7.  Back to cited text no. 4  [PUBMED]  

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[Figure - 1], [Figure - 2]



 

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