title: An interatrial tunnel: a rare form of atrial septal defects.
abstract: Atrial septal defects (ASDs) account for approximately 6%-10% of congenital heart defects. The well-known types of atrial septal communications are the ostium secundum, ostium primum, sinus venosus types, and coronary sinus defects. A 50-year-old female was referred for TEE for better assessment of MR severity and mechanism. 2D/3D-TEE showed a rare combination of different abnormalities; bi-leaflet mitral valve prolapse, cleft P2, cor triatriatum sinister, and a tunnel-shaped IAS communication. To the best of our knowledge, this is a very rare case with a rare form of atrial septal defect that was not described before. We named this defect an interatrial tunnel.
authors.affiliation: Adult Cardiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.
authors.forename: Hani M
authors.identifier: http://orcid.org/0000-0001-8716-7767
authors.initials: HM
authors.lastname: Mahmoud
authors.affiliation: Adult Cardiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Hosny
authors.affiliation: Adult Cardiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.
authors.forename: Peter
authors.initials: P
authors.lastname: Philip
authors.affiliation: Adult Cardiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.
authors.forename: Kerolos
authors.initials: K
authors.lastname: Wagdy
authors.affiliation: Radiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.|Radiology Department, Cairo University Hospital, Cairo, Egypt.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Kharabish
authors.affiliation: Radiology Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.
authors.forename: Wesam
authors.initials: W
authors.lastname: El Mozy
authors.affiliation: Cardiac Surgery Department, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.|Imperial College London, London, United Kingdom.
authors.forename: Magdi
authors.initials: M
authors.lastname: Yacoub
mesh_terms: D054087:Atrial Septum / Q000000981:diagnostic imaging*; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D035583:Rare Diseases
keywords: atrial septal defect; cleft in left atrioventricular valve; congenital heart defects; cor triatriatum