Table 3. Incidence and Patterns of Coronary Anomalies in Our Study.
| Anomaly | N | Incidence (%) | Anomaly (%) |
|---|---|---|---|
| Total coronary angiographies | 3,233 | ||
| Total coronary anomalies | 99 | 3.06 | |
| Anomalies of origin and distribution | |||
| Absent left main trunka | 14 | 0.43 | 14.14 |
| RCA from left sinusb | 12 | 0.37 | 12.12 |
| RCA from ascending aortaa | 4 | 0.12 | 4.04 |
| LCX from right sinus/RCAa | 13 | 0.40 | 13.13 |
| Anomalies of intrinsic coronary arterial anatomy | |||
| Split RCAa | 27 | 0.84 | 27.27 |
| Dual LADa | 22 | 0.68 | 22.22 |
| Superdominant LAD supplying PDAa | 1 | 0.03 | 1.01 |
| Anomalies of coronary termination | |||
| Coronary arterial fistulaec | 6 | 0.18 | 6.06 |
aUsually benign. bPotentially serious. cSmall fistulae are usually benign, large or multiple fistulae can lead to serious manifestations. LAD: left anterior descending artery; RCA: right coronary artery; LCX: left circumflex artery; PDA: posterior descending artery.