Cardiology in the YoungExpert Consensus Statement:Anatomy,Imaging,and Nomenclature of Congenital Aorticcambridge.org/ctyRoot MalformationsOriginal ArticleJustin T.Tretter MD,Diane E.Spicer BS,PA(ASCP)23,Rodney C.G.Franklin MD4,Marie J.Beland MD5,Vera D.Aiello MD,PhD5,Andrew C.Cook PhD',Cite this article:Tretter JT,Spicer DE,Franklin RCG,Beland MJ,Aiello VD,Cook AC,Adrian Crucean MD,PhD8,Rohit S.Loomba MD9,Shi-Joon Yoo MD,PhD10,Crucean A,Loomba RS,Yoo S-J,Quintessenza JA,Tchervenkov Cl,Jacobs JP,James A.Quintessenza MD2,Christo I.Tchervenkov MD11,Jeffrey P.Jacobs MD3,Najm HK,and Anderson RH(2023).ExpertConsensus Statement:Anatomy,Imaging,andHani K.Najm MD12 and Robert H.Anderson MD,PhD13Nomenclature of Congenital Aortic RootMalformations.Cardiology in the Young,page 1Department of Pediatric Cardiology,Cleveland Clinic Children's and The Heart,Vascular,and Thoracic Institute,of9.doi:10.1017/S1047951123001233Cleveland Clinic,Cleveland,Ohio;"Heart Institute,Johns Hopkins All Children's Hospital,St Petersburg.Florida;Congenital Heart Center,UF Health Shands Hospital,Division of Cardiovascular Surgery,Departments ofReceived:3 May 2023Surgery and Pediatrics,University of Florida,Gainesville,Florida;"Paediatric Cardiology Department,RoyalAccepted:4 May 2023Brompton&Harefield National Health Service Trust,London,United Kingdom;SDivision of Pediatric Cardiology,The Montreal Children's Hospital of the McGill University Health Centre,Montreal,Quebec,Canada;HeartCorresponding author:Dr Tretter,Pediatricand Adult Congenital Heart Center,ClevelandInstitute (InCor),University of Sao Paulo School of Medicine,Sao Paulo,Brazil;7Institute of CardiovascularClinic,9500 Euclid Ave,M-41,Cleveland,OHScience,University College London,London,United Kingdom;Department of Paediatric Cardiac Surgery,44195;email:trettej3@ccf.org.Birmingham Women's and Children's Hospital,Birmingham,United Kingdom;Division of Cardiology,AdvocateChildren's Hospital,Oak Lawn,llinois;Division of Cardiology,Department of Pediatrics,Labatt Family HeartCentre,Hospital for Sick Children,University of Toronto,Toronto,Ontario,Canada;Division of CardiovascularSurgery,The Montreal Children's Hospital of the McGill University Health Centre,Montreal,Quebec,Canada;Division of Pediatric Cardiac Surgery,Cleveland Clinic Children's and the Heart,Vascular,and ThoracicInstitute,Cleveland Clinic,Cleveland,Ohio and 13Cardiovascular Research Centre,Biosciences Institute,Newcastle University,Newcastle upon Tyne,United KingdomAbstractOver the past 2 decades,several categorizations have been proposed for the abnormalities of theaortic root.These schemes have mostly been devoid of input from specialists of congenital cardiacdisease.The aim of this review is to provide a classification,from the perspective of these specialists,based on an understanding of normal and abnommal morphogenesis and anatomy,with emphasisplaced on the features of clinical and surgical relevance.We contend that the description of thecongenitally