Purpose: The purpose of this study was to determine whether drainage and revision are an effective treatment for abdominal pseudocyst associated ventriculoperitoneal (VP) shunt failure by estimating the total rate of secondary shunt failure.
Methods: We performed a retrospective review of children with hydrocephalus diagnosed with and treated for an abdominal pseudocyst at the Children's Hospital, London Health Sciences Centre (LHSC) between January 1, 2000 and May 31, 2016 (ethics approval # 108136). Patients with a VP shunt were included if (i) the development of an abdominal pseudocyst at age 2 to 18 years was identified, (ii) treatment of the pseudocyst by either interventional radiology (IR) or surgical drainage, and (iii) revision of the VP shunt. Demographic data and details of pseudocyst formation/ treatment as well as subsequent failures were identified.
Results: Twelve patients who had a VP shunt developed abdominal pseudocyst and met inclusion criteria. A 91% shunt failure rate after drainage and shunt revision was identified. Three patients had the pseudocyst drained in interventional radiology and then externalized due to shunt infection. Nine patients were treated by surgical revision. Ten patients experienced recurrent shunt failure following initial drainage of the pseudocyst: pseudocyst reoccurrence (n = 3), distal obstruction from adhesions (n = 1), and uncleared infection (n = 6).
Conclusion: The results suggest that pseudocyst drainage and shunt revision is ineffective in providing long-term resolution of shunt problems.
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