Abstract

Summary Previously unrecognized inguinal hernia was observed in 25 of 173 infants and children after ventriculoperitoneal (VP) shunt procedures for hydrocephalus (15%). This is in contrast to a 1.2% incidence of hernia (3/242 patients) after ventriculoatrial shunts. Mean interval from shunt to recognition of hernia was 6.8 mo. A high incidence of incarceration (20%), and positive bilaterality (80%) was observed. VP-shunt catheter was noted in the hernia sac on preoperative abdominal x-ray in four instances and demonstrated disconnection in one. These observations suggest an increased incidence of inguinal hernia after VP shunts related to an accumulation of CSF in excess of the peritoneal absorption rate. Close observation of infants for the development of an inguinal hernia after VP shunt procedures is suggested.

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