Ostomy closure and the role of repeat endoscopic third ventriculostomy (re-ETV) in failed ETV procedures.

Background: Endoscopic third ventriculostomy (ETV) has replaced shunt surgery for several indications. Failure of ETV secondary to restenosis can result in recurrence of symptoms of raised intracranial pressure.

Objective: To analyze the rates of restenosis due to ostomy closure and factors resulting in failures and to assess the role of re-ETV in such cases.