Coronary anomaly | Number of patients (n = 103, 1.16%) | Anomaly incidence among 8864 patients (%) | Constituent ratio among 103 cases (%) |
---|---|---|---|
Origin and course of anomalies | Â | Â | Â |
 Anomalous origin from opposite sinus, with anomalous course |  |  |  |
  RCA arising from the left anterior sinus, with an interarterial course | 41 | 0.463 | 39.8 |
  LCX arising from the right anterior sinus or RCA, with a retroaortic course | 5 | 0.056 | 4.9 |
  LMCA arising from the right anterior sinus, with an interarterial course | 1 | 0.011 | 1.0 |
 Multiple ostia |  |  |  |
  Absent left main trunk (split origin of LCA) | 10 | 0.112 | 9.7 |
  RCA and conus branch arising separately | 7 | 0.080 | 6.8 |
 Single coronary ostium | 1 | 0.011 | 1.0 |
Anomalous location of coronary ostium in the correct coronary sinus | Â | Â | Â |
 High takeoff |  |  |  |
  RCA | 9 | 0.102 | 8.7 |
  LMCA | 6 | 0.070 | 5.8 |
  RCA and LMCA | 2 | 0.023 | 1.9 |
 Commissural | 4 | 0.045 | 3.9 |
 Duplication of arteries (type IV dual LAD) | 4 | 0.045 | 3.9 |
Coronary termination anomalies (coronary artery fistulas) | Â | Â | Â |
 RCA-PA | 1 | 0.011 | 1.0 |
 RCA-RA | 1 | 0.011 | 1.0 |
 LAD-PA | 6 | 0.070 | 5.8 |
 LAD-RCA | 1 | 0.011 | 1.0 |
 LCX-bronchial artery | 1 | 0.011 | 1.0 |
 RCA-PA and LAD-PA | 3 | 0.034 | 2.9 |