title: Prevalence and characteristics of major and minor coronary artery anomalies in an adult population assessed by computed tomography coronary angiography.
abstract: OBJECTIVE
  There is conflicting data regarding the prevalence and characteristics of coronary artery anomalies (CAAs). We sought to explore the prevalence and characteristics of major and minor CAAs using computed tomography coronary angiography (CCTA).
  
  
  RESULTS
  We prospectively studied 577 patients in sinus rhythm referred for control of stents or for screening due to the presence of multiple risk factors (53%), or due to chest pain, equivalent symptoms or inconclusive stress tests (47%). 40 and 64 slice CT scanners were used. The mean age was 61 +/- 11 years and 81% were male. We identified CAAs in 121 (21.0%) patients. Anomalous origination of a coronary artery from the opposite sinus (ACAOS) were identified in 6/577 (1%) patients. Coronary ectasia or aneurysm was present in 10/577 (1.7%) patients. One-hundred and nine intramuscular segments (MB) were found in 100/577 (17.3%) patients. Coronary hypoplasia was identified in 3/577 (0.5%) patients, all involving the RCA, and 3/577 (0.5%) patients had an absent left main coronary artery. None of the segments with ACAOS (proximal segment) or MB had atherosclerotic plaque.
  
  
  CONCLUSIONS
  CAAs were highly prevalent along the coronary tree and anatomical characteristics that might help stratify the risk and guide therapy of CAAs could be easily identified with CCTA.
authors.affiliation: Department of Cardiovascular imaging, Otamendi Hospital, Azcuenaga 870 (C1115AAB), Buenos Aires, Argentina. grodriguezgranillo@gmail.com
authors.forename: Gastón A
authors.initials: GA
authors.lastname: Rodríguez-Granillo
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Rosales
authors.forename: Francesca
authors.initials: F
authors.lastname: Pugliese
authors.forename: Carlos
authors.initials: C
authors.lastname: Fernandez-Pereira
authors.forename: Alfredo E
authors.initials: AE
authors.lastname: Rodríguez
mesh_terms: D000368:Aged; D003323:Coronary Aneurysm / Q000000981:diagnostic imaging / Q000453:epidemiology; D017023:Coronary Angiography / Q000379:methods*; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D003331:Coronary Vessels / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D054084:Myocardial Bridging / Q000000981:diagnostic imaging / Q000453:epidemiology; D015995:Prevalence; D011446:Prospective Studies; D014057:Tomography, X-Ray Computed