Correlative analysis of plaques phenotypes with preoperative symptoms
| Patients | Asymptomatic | Symptomatic | |
| Group A | 17 | 15 (88%) | 2 (12%) |
| Group B | 14 | 8 (57%) | 6 (43%) |
| Group C | 25 | 9 (36%) | 16 (64%) |
| Group D | 51 | 6 (12%) | 45 (88%) |
| Total | 107 | 38 | 69 |
Group A: plaques with no disruption of the fibrous cap. Group B: plaques with ulceration. Group C: plaques with ulceration and IPH. Group D: plaques with false luminal formation.