Table 3 MRI and MRV findings in discriminating IIH cases from control
MRI and MRV findings | Group 1 | % | Group 2 | % |
|---|---|---|---|---|
Pituitary gland height | ||||
 Grade 1 (normal) | 5 | 14.7 | 31 | 91.2 |
 Grade 2 | 6 | 17.6 | 3 | 8.8 |
 Grade 3 | 12 | 35.3 | 0 | 0 |
 Grade 4 | 7 | 20.6 | 0 | 0 |
 Grade 5 (empty sella) | 4 | 11.8 | 0 | 0 |
Flattened posterior globe | ||||
 Present | 26 | 76.5 | 0 | 0 |
 Absent | 8 | 23.5 | 34 | 100 |
Optic-nerve sheath distention | ||||
 Grade 0 | 5 | 14.7 | 31 | 91 |
 Grade 1 | 17 | 50 | 3 | 9 |
 Grade 2 | 12 | 35.3 | 0 | 0 |
Optic nerve tortuosity | ||||
 Present | 9 | 26.5 | 0 | 0 |
 Absent | 25 | 73.5 | 34 | 100 |
Transverse/sigmoid sinus patency | ||||
 Normal | 8 | 23.5 | 30 | 88.2 |
 Unilateral stenosis | 11 | 32.3 | 4 | 11.8 |
 Bilateral stenosis | 15 | 44.2 | 0 | 0 |
Combined conduit score (CCS) | ||||
 ≤ 4 | 85.3 | 76.5 | 2 | 6 |
 > 4 | 5 | 14.7 | 32 | 94 |