title: A posterior mediastinal mass diagnosed by echocardiogram.
authors.affiliation: Boston University School of Medicine, Boston City Hospital, MA 02118, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Falk
mesh_terms: D000328:Adult; D004108:Dilatation, Pathologic; D004931:Esophageal Achalasia / Q000150:complications / Q000000981:diagnostic imaging*; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography