Bilateral large chronic ossified epidural hematoma after ventriculoperitoneal shunt: a special case report and treatment management

Chronic ossified epidural hematoma is an uncommon complication of ventricular shunt operation, and bilateral chronic ossified epidural hematoma was rare to reported in the literature. We report a 35-year-old man with triventricular hydrocephalus was treated with a ventriculoperitoneal shunt but presenting with chronic epidural hematoma at 3 days reexamination after operation. At that time, the doctors did not pay much attention and surgery for it. With 19 years severe headache, the epidural hematoma increasing gradually and calcification constantly, the chronic ossified epidural hematoma was removed after he arrived in our department. Although the use of high or medium pressure valves, valves with an antisiphon device, adjustable pressure valves or flow control valves have been recommended to prevent this complication in previous reports, it was seen that our case had been treated with a medium pressure flow control valve.