K. Mahadevan Krishnamoorthy, DM, DNB, Hemant Madan, MD, Jaganmohan A

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Presentation transcript:

Origin of left subclavian artery from ascending aorta: A variant of double aortic arch K. Mahadevan Krishnamoorthy, DM, DNB, Hemant Madan, MD, Jaganmohan A. Tharakan, DM The Journal of Thoracic and Cardiovascular Surgery Volume 131, Issue 1, Pages 245-247 (January 2006) DOI: 10.1016/j.jtcvs.2004.03.059 Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Aortic root angiogram; frontal view. AA, Ascending aorta; LSCA, left subclavian artery; RSCA, right subclavian artery; CCA, common carotid artery. Outline of the origin of LSCA (white arrows). The Journal of Thoracic and Cardiovascular Surgery 2006 131, 245-247DOI: (10.1016/j.jtcvs.2004.03.059) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Aortic root angiogram; lateral view. AA, Ascending aorta; LSCA, left subclavian artery; RSCA, right subclavian artery; CCA, common carotid artery. Outline of the origin of LSCA (white arrows). The Journal of Thoracic and Cardiovascular Surgery 2006 131, 245-247DOI: (10.1016/j.jtcvs.2004.03.059) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Embryology of the anomaly. R, Right side; L, left side; III, third arch; IV, fourth arch; ISA, intersegmental artery; RDAR, right dorsal aortic root; LDAR, left dorsal aortic root; TA, truncus arteriosus; DA, descending aorta. Portion that disappears (dashed lines); boundary between various segments (dotted lines). Only the third and fourth arches are shown. Other abbreviations as in Figure 1. Only the fourth arch (and not the seventh ISA) can connect to the dorsal aortic root. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 245-247DOI: (10.1016/j.jtcvs.2004.03.059) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions