Table 1:
Prevalence of various grades of neurovascular conflict and types of vascular involvement in patients with TN and in controls
| Contrast Enhancement | Symptomatic Side (No.) (%) of 81 Cases | Asymptomatic Side (No.) (%) of 81 Cases | Control (No.) (%) of 30 Cases | |
|---|---|---|---|---|
| Grades of neurovascular conflict | ||||
| 0 | Contrast− | 10 (12.3) | 27 (33.3) | 12 (40.0) |
| Contrast+ | 10 (12.3) | 27 (33.3) | 12 (40.0) | |
| 1 | Contrast− | 33 (40.7) | 48 (59.3) | 18 (60.0) |
| Contrast+ | 29 (35.8) | 48 (59.3) | 18 (60.0) | |
| 2 | Contrast− | 26 (32.1) | 6 (7.4) | 0 (0.0) |
| Contrast+ | 15 (18.5) | 6 (7.4) | 0 (0.0) | |
| 3 | Contrast− | 12 (14.8) | 0 (0) | 0 (0.0) |
| Contrast+ | 27 (33.3) | 0 (0) | 0 (0.0) | |
| 1, 2, or 3 | Contrast− | 71 (87.7) | 54 (66.7) | 18 (60.0) |
| Contrast+ | 71 (87.7) | 54 (66.7) | 18 (60.0) | |
| 2 and 3 | Contrast− | 38 (46.9) | 6 (7.4) | 0 (0.0) |
| Contrast+ | 42 (51.9) | 6 (7.4) | 0 (0.0) | |
| Artery alone | 27 (33.3) | 17 (21.0) | 4 (13.3) | |
| Artery involved | 49 (60.5) | 30 (37.0) | 5 (16.7) | |
| Vein alone | 22 (27.2) | 24 (29.6) | 12 (40.0) | |
| Vein involved | 44 (54.3) | 37 (45.7) | 13 (43.3) | |
| Mixed | 22 (27.2) | 13 (16.0) | 1 (3.3) |
Note:—Contrast+ indicates contrast enhancement; Contrast−, no contrast enhancement.