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Accessory “Pseudo” Left Atrium Confirmed by Cardiac Magnetic Resonance Imaging

AUTHORS

avatar Zahra Alizadeh Sani 1 , avatar Afsoon Fazlinezhad 2 , avatar Mohammad Vojdanparast 2 , avatar Shadi Sarafan-Sadeghi 3 , avatar Azin Seifi 3 , avatar Saeed Mirsadraee 4 , avatar Behshid Ghadrdoost 1 , avatar Mohaddeseh Behjati 5 , *

1 Rajaie Cardiovascular Medical and Research Centre, Iran University of Medical Sciences, Tehran, Iran

2 Cardiovascular Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

3 Department of Medical Sciences, Mashhad Branch, Islamic Azad University, Mashhad, Iran

4 University of Edinburgh, Little France Crescent, Edinburgh, United Kingdom

5 Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran

How to Cite: Alizadeh Sani Z, Fazlinezhad A, Vojdanparast M, Sarafan-Sadeghi S , Seifi A , et al. Accessory “Pseudo” Left Atrium Confirmed by Cardiac Magnetic Resonance Imaging. Int Cardio Res J. 2018;12(3):e65047.

ARTICLE INFORMATION

International Cardiovascular Research Journal: 12 (3); e65047
Published Online: September 01, 2018
Article Type: Case Report
Received: August 29, 2018
Accepted: May 19, 2018
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Abstract

Accessory chamber is an extremely rare congenital abnormality, which is often detected as an incidental finding on echocardiography. We described a case of accessory pseudo Left Atrium (LA) firstly detected by echocardiography and confirmed by Cardiac Magnetic Resonance imaging (CMR). Case presentation- A 4-year-old girl referred to our center with recent fatigue and exertional dyspnea. A large accessory LA was clearly visible on transthoracic echocardiography. CMR demonstrated an isolated wide base round “auricle like” chamber with large pectinate muscles simulating bear’s paw. The accessory LA’s only connection was to the Left Ventricle (LV) through an orifice that functioned as a dysplastic valve at the level of Left Ventricular Outflow Tract (LVOT). This valve had severe regurgitation and stenosis with no papillary connection. Conclusion- This entity differs from cor-triatriatum of the LA because there is a superior-inferior septum between the two left-sided atria with no interatrial communication and no pulmonary venous drainage to the accessory chamber.
 
 

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© 2018, Shiraz University of Medical Sciences.
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