Intracavernous and petrosal sinus gradient of ACTH levels
| Case No. | Age, y, Sex | Side | Drainage Route | Central/Peripheral Ratio of ACTH Level | |||
|---|---|---|---|---|---|---|---|
| Ant. | Mid. | Post. | IPS | ||||
| 1 | 58, F | rt | PP, IPS | 1.0 | 1.4 | 1.3 | 1.0 |
| lt | IPS | 4.9 | 1.5 | 12.6 | 7.0 | ||
| 2 | 63, F | rt | IPS | 1.0 | 1.0 | 1.0 | 1.0 |
| lt | IPS | 1.0 | 1.0 | 1.0 | 0.9 | ||
| 3 | 45, F | rt | PP, IPS | 8.4 | 8.4 | 11.8 | 0.8 |
| lt | PP, IPS | 4.9 | 24.3 | 67.8 | 2.3 | ||
| 4 | 41, F | rt | PP | 34.8 | 5.3 | 0.9 | 0.8 |
| lt | IPS | 0.9 | 0.8 | 0.8 | 0.8 | ||
| 5 | 66, F | rt | IPS | – | – | 2.1 | 4.6 |
| lt | IPS | 1.3 | 1.3 | 1.6 | 2.5 | ||
Note:— IPS indicates inferior petrosal sinus; PP, pterygoid plexus; Ant., anterior; Mid., middle; Post, posterior; rt, right; lt, left; F, female; ACTH, adrenocorticotropic hormone.