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Table 2 Predisposing factors causing failure of ETV

From: Endoscopic third ventriculostomy in children: problems and surgical outcome: analysis of 34 cases

Fenestrated prepontine cistern Total no. of cases Revision of surgery
Ventriculostomy stoma closure 3 3
Presence of the second membrane 12 2
Presence of granulation tissue around the stomaa 2 2
  1. aUse of steroid (Dexamethasone 5 mg mixed with normal saline) around the ventriculostomy stoma after balloon dilation in case of inflammatory arachnoid membranes