title: Rare complication of ventriculoperitoneal shunt: Catheter protrusion to subcutaneous tissue - Case report.
abstract: BACKGROUND
  Ventriculoperitoneal (VP) shunt is a day-to-day procedure performed by a neurosurgeon. The most frequent associated complications are obstructive and infectious. Although rare, there are well-reported complications related to the poor positioning of the distal catheter, with perforation of organs and tissues. Still rarer are the complications related to the migration of this catheter.
  
  
  METHODS
  We describe an atypical case of VP shunt postoperative by normal pressure hydrocephalus. After well-documented proper positioning of the distal catheter into the intraperitoneal cavity, it protruded into the subcutaneous space. Even on a new documented satisfactory abdominal tomography, this catheter migrated back again to the subcutaneous tissue.
  
  
  CONCLUSIONS
  We did not find plausible explanation for this rare event.
authors.affiliation: Department of Neurosurgery and Interventional Neuroradiology, University Hospital Cajuru, Curitiba, PR, Brazil.
authors.forename: Luana Antunes Maranha
authors.initials: LA
authors.lastname: Gatto
authors.affiliation: Department of Neurosurgery of Bragança University, Division of Neurosurgery, Sirio LIbanês Hospital, São Paulo, SP, Brazil.
authors.forename: Roger
authors.initials: R
authors.lastname: Mathias
authors.affiliation: Divisions of Neurology, Sirio LIbanês Hospital, São Paulo, SP, Brazil.
authors.forename: Rogério
authors.initials: R
authors.lastname: Tuma
authors.affiliation: Divisions of Surgery, Sirio LIbanês Hospital, São Paulo, SP, Brazil.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Abdalla
authors.affiliation: Divisions of Neurosurgery, Sirio LIbanês Hospital, São Paulo, SP, Brazil.
authors.forename: Paulo Henrique Pires
authors.initials: PH
authors.lastname: de Aguiar
keywords: Catheters; cerebrospinal fluid shunts; normal pressure hydrocephalus; postoperative complications; surgically-created structures; ventriculoperitoneal shunt