title: Divided left atrium with obstruction of pulmonary venous return in the setting of hypoplasia of the left heart.
abstract: We describe an infant with hypoplasia of the left heart diagnosed prenatally who, at birth, had signs of severe pulmonary venous obstruction. Echocardiography indicated normally connecting pulmonary veins, and showed a paradoxical right-to-left shunt across a patent oval foramen. Postmortem examination revealed that the obstruction was due to a divided left atrium, or cor triatriatum sinister, with an imperforate muscular diaphragm separating completely the two components of the divided atrium.
authors.affiliation: Department of Pathology, Columbia University Medical Center, New York, NY 10032, USA.
authors.forename: Sara E
authors.initials: SE
authors.lastname: Monaco
authors.forename: Welton M
authors.initials: WM
authors.lastname: Gersony
authors.forename: Harshwardhan M
authors.initials: HM
authors.lastname: Thaker
mesh_terms: D003310:Cor Triatriatum / Q000473:pathology*; D005260:Female; D006801:Humans; D018636:Hypoplastic Left Heart Syndrome / Q000473:pathology*; D007231:Infant, Newborn; D011668:Pulmonary Veno-Occlusive Disease / Q000473:pathology*