Table 5 Reoperation because of treatment failure
Reoperation methodPrimary operation
CraniotomyInternal shunt
Revision of shunt2
New internal shunt24
Sum of interventions8*12†
  • *One patient was reoperated initially with craniotomy, and subsequently with two insertions of an internal shunt.

  • †One patient was reoperated twice with insertions of an internal shunt, followed by a craniotomy. One patient was reoperated with revision of the shunt and subsequently with insertion of a new internal shunt.