Relative frequencies of non-atherosclerotic coronary pathology as a cause of sudden cardiac death (SCD) in our series
| Cause of SCD | Number of cases | Percentage of total number of cases of non-atherosclerotic coronary pathology (%) | Percentage of all-cause SCDs (%) |
| Anomalous coronary arteries | 24 | 48 | 1.5 |
| Acute dissection of coronary artery | 8 | 16 | 0.5 |
| Coronary artery vasculitis | 6 | 12 | 0.4 |
| Coronary artery spasm | 6 | 12 | 0.4 |
| Idiopathic arterial calcification of infancy | 3 | 6 | 0.2 |
| Fibromuscular dysplasia | 2 | 4 | 0.1 |
| Benign lipoma of coronary artery | 1 | 2 | 0.06 |
| Total | 50 | 100 | 3.0 |