title: Dynamic changing mass behind the left atrium.
authors.forename: S
authors.initials: S
authors.lastname: Buss
authors.forename: H A
authors.initials: HA
authors.lastname: Katus
authors.forename: D
authors.initials: D
authors.lastname: Mereles
mesh_terms: D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005260:Female; D006325:Heart Atria; D006338:Heart Neoplasms / Q000000981:diagnostic imaging*; D006551:Hernia, Hiatal / Q000000981:diagnostic imaging*; D006801:Humans; D014463:Ultrasonography