Frequency and measurements of intracranial findingsa
| CSF Leak (n = 76) | No CSF Leak (n = 98) | P Value | |
|---|---|---|---|
| Smooth dural enhancement | 54 (57.4%) | 9 (12.5%) | P < .001b |
| Dural enhancement in IACs | 34 (36.2%) | 4 (5.6%) | P < .001b |
| Subdural fluid collections | 9 (9.2%) | 4 (5.3%) | P = .32 |
| Superficial siderosis | 3 (3.1%) | 1 (1.3%) | P = .44 |
| Pituitary engorgement | 56 (57.1%) | 17 (22.4%) | P < .001b |
| Non-Chiari cerebellar tonsillar descent of >5 mm | 22 (22.4%) | 8 (10.5%) | P = .04b |
| Dural venous sinus engorgement | Yes = 25 (25.8%) Indeterminate = 27 (27.8%) | Yes = 5 (6.6%) Indeterminate = 4 (5.3%) | P < .001b |
| Layered hyperostosis | 8 (8.2%) | 3 (3.9%) | P = .25 |
| Cerebral aqueduct iter below incisural line | 33 (33.7%) | 15 (19.7%) | P = .04b |
| Average mamillopontine distance (mm) | 5.5 (SD, 2.1) mm | 5.9 (SD, 1.7) mm | P = .13 |
| Average prepontine cistern size (mm) | 4 (SD, 1.5) mm | 4.2 (SD, 1.6) mm | P = .35 |
| Average suprasellar cistern size (mm) | 3.2 (SD, 2.1) mm | 4.8 (SD, 2.7) mm | P < .001b |