2020
DOI: 10.1017/s1047951120003601
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Anatomic classification of the right aortic arch

Abstract: The term right aortic arch is used for an aorta that arches over the right bronchus. Right aortic arch was classified into two types by Felson et al, based on branching patterns, with a proposed embryological explanation, and into three types by Shuford et al. Other anatomical variants of right aortic arch were described later, including isolated left brachiocephalic artery and aberrant left brachiocephalic artery. We have classified right aortic arch anatomy into 10 variants, supported by radiological evidenc… Show more

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Cited by 8 publications
(7 citation statements)
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“…Patency of the distal left arch is important for distinguishing a complete DAA from an incomplete DAA, where this segment is atretic, with the persistence of a fibrous cord that is normally not distinguishable in CT imaging. Instead, total involution of this segment configures a situation of right-sided aortic arch with mirror-branching, which is rarely associated with presence of a vascular ring [ 11 , 12 ].…”
Section: Discussionmentioning
confidence: 99%
“…Patency of the distal left arch is important for distinguishing a complete DAA from an incomplete DAA, where this segment is atretic, with the persistence of a fibrous cord that is normally not distinguishable in CT imaging. Instead, total involution of this segment configures a situation of right-sided aortic arch with mirror-branching, which is rarely associated with presence of a vascular ring [ 11 , 12 ].…”
Section: Discussionmentioning
confidence: 99%
“…A more recent study has subclassified RAA into 10 distinct variants. 15 The most frequent variant is mirror-image branching (59.3%–84.5%), followed by ALSA (14.1%–39.9%), then isolated left subclavian (1%). 3 , 14 …”
Section: Discussionmentioning
confidence: 99%
“…5 Mirror image RAA is frequently seen with Tetralogy of Fallot in 85%–90% of cases. 3 , 6 , 15 Infants present with symptoms of cyanotic heart defects or respiratory distress and poor feeding/weight gain due to compression of the esophagus or trachea. 5 , 6 Conversely, RAA-ALSA is associated with congenital cardiac anomalies in only 5%–15%, thus many with the ALSA variant will go undetected and are typically diagnosed incidentally on imaging during adulthood.…”
Section: Discussionmentioning
confidence: 99%
“…3 In a study by Prabhu et al, 10 variations of the right aortic arch, which arises from the fourth right pharyngeal arch artery, were identified, with potential embryological causes. 10 This classification excludes right arches originating from structures other than the right fourth pharyngeal arch vessel, such as the right-sided cervical aortic arch, as well as right arches containing the circumflex aorta. The classification remains the same whether a right-sided arterial duct is present or not.…”
Section: Discussionmentioning
confidence: 99%