Double Interatrial Septum: When Two Layers Aren't Enough

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Maria Tamara Neves Pereira (Cardiology Department, Hospital Senhora da Oliveira Guimaraes) ;
Ana Margarida Ramada Oliveira (Cardiology Department, Hospital Senhora da Oliveira Guimaraes) ;
Ana Filipa Polonia de Brito Cordeiro (Cardiology Department, Hospital Senhora da Oliveira Guimaraes) ;
Maria Cristina Freire Araujo da Cruz (Congenital Heart Disease Department, Hospital de Sao Joao) ;
Antonio Rodrigo Miranda Lourenco (Cardiology Department, Hospital Senhora da Oliveira Guimaraes)

Adamane Jayaram A, Uddina Kumeri AR, Rao SM, Tuli A, Nayak K. Double interatrial septum with persistent interatrial chamber: a rare but clinically significant anomaly. Echocardiography 2020;37:1694-7.
Roberson DA, Javois AJ, Cui W, Madronero LF, Cuneo BF, Muangmingsuk S. Double atrial septum with persistent interatrial space: echocardiographic features of a rare atrial septal malformation. J Am Soc Echocardiogr 2006;19:1175-81.