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Bahij Kreidieh, MD, Miguel Valderrábano, MD, FHRS 

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1 Malignant left atrial appendage morphology and embolization risk in atrial fibrillation 
Bahij Kreidieh, MD, Miguel Valderrábano, MD, FHRS  HeartRhythm Case Reports  Volume 1, Issue 6, Pages (November 2015) DOI: /j.hrcr Copyright © 2015 Heart Rhythm Society Terms and Conditions

2 Figure 1 Patient 1 left atrial appendage (LAA) morphology. The LAA exhibits a broad base with few trabeculae superiorly, with a narrow and sharp-angled bend gradually constricting into a thin, elongated lobe. A: A computed tomography angiogram showing LAA morphology and anatomy, with lobe length measurements and diameter measurements at multiple points of morphologic significance. B: Contrast injection into the LAA delineating its complex anatomy during the ligation procedure. C: A 3-dimensional reconstruction of LAA morphology. D: LAA volume measurement. E: LAA depth. F: Second lobe length measurement. G, H: Measurements of LAA neck axes. HeartRhythm Case Reports 2015 1, DOI: ( /j.hrcr ) Copyright © 2015 Heart Rhythm Society Terms and Conditions

3 Figure 2 Patient 2 left atrial appendage (LAA) morphology. The LAA exhibits a broad base with few trabeculae superiorly, with a narrow and sharp-angled bend gradually constricting into a thin, elongated lobe. A, B: Computed tomography angiograms showing LAA morphology with measurements of length of the second lobe and the diameter at the point of curvature and second lobe tip. C: Contrast injection into the LAA delineating its complex morphology during the ligation procedure. D: A 3-dimensional reconstruction of LAA morphology. E: LAA volume measurement. F: LAA depth. G, H: Measurements of LAA neck axes. I: Second lobe length measurement. HeartRhythm Case Reports 2015 1, DOI: ( /j.hrcr ) Copyright © 2015 Heart Rhythm Society Terms and Conditions

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