Abdominal pseudocyst: a rare complication of ventriculoperitoneal shunting.

Abdominal cerebrospinal fluid (CSF) pseudocyst is a rare complication of ventriculoperitoneal shunting. It is well known in children but uncommon in adults. We present a 30-year-old woman with abdominal distension, vomiting and confusion caused by her developing an abdominal CSF pseudocyst, 13 years after her last shunt revision. Adult neurologists need to be aware of this late complication.