A closed interatrial septum aneurysm, filled with blood, mimicking a tumour in the right atrium.
We report the case of a 70-year-old woman with rheumatic mitral stenosis and a transient ischaemic attack. Transoesophageal echocardiography revealed a cystic mass in the right atrium, hanging to the interatrial septum by a pedicle, not circulating. The mass was heterogeneous and suggested a tumour (myxoma) or a thrombus. Surgical resection showed it was an interatrial septal aneurysm, closed on itself, filled with blood. The usual causes of cardiac tumours and pathogeny of large interatrial aneurysms are discussed.
Ginon
I
I
Service de Cardiologie, Hôpital Cardio-Vasculaire Louis Pradel, BP Lyon-Montchat, 69394 Lyon Cedex 3, France.
Mestrallet
C
C
Barthelet
M
M
Robin
J
J
André-Fouët
X
X
D000368:Aged; D003937:Diagnosis, Differential; D017548:Echocardiography, Transesophageal; D005260:Female; D006322:Heart Aneurysm / Q000150:complications* / Q000175:diagnosis*; D006325:Heart Atria / Q000000981:diagnostic imaging / Q000473:pathology*; D006338:Heart Neoplasms / Q000150:complications* / Q000175:diagnosis*; D006346:Heart Septum / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans