Patient demographics
| Total No. of patients | 6 |
| Age range (yr); sex (M:F) | 24–46; 4:2 |
| Indication for shunt placement (No.) | |
| Pseudotumor cerebri | 4 |
| Chiari I malformation | 1 |
| Postoperative pseudomeningocele | 1 |
| Presenting symptoms prior to shunt replacement (No.) | |
| Headache | 5 |
| Abdominal pain | 1 |
| Time to development of cyst after surgery | 16 days to 5 years |
| Site of shunt catheter obstruction (No.) | |
| Proximal | 3 |
| Proximal and distal | 3 |