title: Bronchogenic cyst of the interatrial septum presenting as atrioventricular block.
abstract: Bronchogenic cysts are congenital lesions that are a remnant from abnormal budding of the embryonic foregut. These cysts are usually single; most cases are either asymptomatic or present with respiratory symptoms. A 43-year-old woman presented with intermittent type II atrioventricular block during cholecystectomy. The cardiac evaluation including transthoracic and transesophageal echocardiography and magnetic resonance imaging revealed a cystic homogeneous mass within the interatrial septum. The patient underwent surgical resection of the mass and closure of the septal defect. Histopathology identified ciliated columnar epithelium, consistent with the diagnosis of a bronchogenic cyst.
authors.affiliation: Department of Cardiology and Angiology, Charité - Universitätsmedizin Berlin, Berlin, Germany.
authors.forename: Adrian C
authors.initials: AC
authors.lastname: Borges
authors.forename: Fabian
authors.initials: F
authors.lastname: Knebel
authors.forename: Alexander
authors.initials: A
authors.lastname: Lembcke
authors.forename: Alexander
authors.initials: A
authors.lastname: Panda
authors.forename: Takeshi
authors.initials: T
authors.lastname: Komoda
authors.forename: Nicola E
authors.initials: NE
authors.lastname: Hiemann
authors.forename: Rudolf
authors.initials: R
authors.lastname: Meyer
authors.forename: Gert
authors.initials: G
authors.lastname: Baumann
authors.forename: Roland
authors.initials: R
authors.lastname: Hetzer
mesh_terms: D000328:Adult; D054087:Atrial Septum; D054537:Atrioventricular Block / Q000175:diagnosis* / Q000209:etiology*; D001994:Bronchogenic Cyst / Q000150:complications*; D005260:Female; D006801:Humans