title: Atrioventricular Septum Pseudoaneurysm As Late Complication After Repeated Mitral Valve Replacement.
abstract: We report the case of a pulsatile mass found in a patient who presented for a routine echocardiogram. The mass turned out to be an exceedingly rare mitral-subannular pseudoaneurysm involving the membranous atrioventricular septum with systolic expansion protruding into right atrium, discovered late after repeated multiple valve replacement surgery. Although these pseudoaneurysms may present asymptomatically, surgical intervention might be indicated because of the risk of rupture. This report describes this rare finding, discusses possible pathophysiological mechanisms, and underscores the importance of multimodality imaging to achieve correct identification and delimitation to guide surgical intervention in such cases.
authors.affiliation: Cardiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Agudo-Quilez
authors.affiliation: Cardiology Department, Hospital Universitario de la Princesa, Madrid, Spain. Electronic address: eduardopozoosinalde@yahoo.es.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Pozo
authors.affiliation: Cardiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Amparo
authors.initials: A
authors.lastname: Benedicto
authors.affiliation: Cardiac Surgery Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Reyes
authors.affiliation: Radiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: María José
authors.initials: MJ
authors.lastname: Olivera
authors.affiliation: Radiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Paloma
authors.initials: P
authors.lastname: Caballero
authors.affiliation: Cardiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Luis Jesús
authors.initials: LJ
authors.lastname: Jiménez-Borreguero
authors.affiliation: Cardiology Department, Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Alfonso
mesh_terms: D000368:Aged; D017541:Aneurysm, False / Q000175:diagnosis / Q000209:etiology*; D054087:Atrial Septum; D004452:Echocardiography; D005500:Follow-Up Studies; D006322:Heart Aneurysm / Q000175:diagnosis / Q000209:etiology*; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D011183:Postoperative Complications; D012086:Reoperation / Q000009:adverse effects; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D054088:Ventricular Septum