title: Ventricular septal aneurysms in adults: findings of cardiac CT images and correlation with clinical features.
abstract: BACKGROUND
  With the increasing use of multidetector computed tomography (MDCT), the number of incidentally detected ventricular septal aneurysms (VSAs) in adults has increased. However, to date, there are not sufficient well-organized data regarding VSAs in adults on MDCT.
  
  
  OBJECTIVE
  To evaluate the CT findings of ventricular septal aneurysms (VSAs) in adults and correlate the findings with clinical features.
  
  
  METHODS
  We performed a retrospective review of the cardiac CT reports in our electronic database of 3402 patients who underwent ECG-gated cardiac CT scans using a 64-slice multidetector CT or dual-source CT from October 2006 to December 2009 at our institute. Among them, eight patients were diagnosed with a VSA. We evaluated the location, size, and morphology of VSAs on cardiac CT angiographies (CCTAs) and correlated the findings with the clinical features of the patients.
  
  
  RESULTS
  On CCTAs, all eight patients were found to have VSAs in the membranous portion of the interventricular septum and toward the right ventricle. The VSAs were 10-22 mm at their longest diameter and had wide necks. The VSAs were lobulated along the outer margin and were incidental findings in all patients. Four of the eight patients had a conduction abnormality such as first-degree atrio-ventricular block or incomplete right bundle branch block seen on ECG, whereas the other four patients had normal ECGs.
  
  
  CONCLUSIONS
  VSA in adults is usually detected incidentally. It is seen in the membranous portion of the interventricular septum with a lobulated shape on CCTA. It is occasionally associated with a conduction anomaly.
authors.affiliation: Department of Radiology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Korea.
authors.forename: Maria
authors.initials: M
authors.lastname: Choi
authors.forename: Jung Im
authors.initials: JI
authors.lastname: Jung
authors.forename: Bae Young
authors.initials: BY
authors.lastname: Lee
authors.forename: Hyo Rim
authors.initials: HR
authors.lastname: Kim
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage; D000368:Aged; D003287:Contrast Media; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006322:Heart Aneurysm / Q000000981:diagnostic imaging*; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging*; D006801:Humans; D033162:Incidental Findings; D007472:Iohexol / Q000031:analogs & derivatives; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D000319:Adrenergic beta-Antagonists; D003287:Contrast Media; D007472:Iohexol; C038192:iopromide