Isolated Fourth Ventricle Associated with Treated Hydrocephalus and Chiari type 2 Malformation
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Case Report

Isolated Fourth Ventricle Associated with Treated Hydrocephalus and Chiari type 2 Malformation

Bagcilar Med Bull 2017;2(4):104-107 DOI: 10.5350/BMB20171216055549
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Abstract

Isolated fourth ventricle is a rare condition seen as a result of anatomical or functional occlusion of the inlet and outlet holes of the fourth ventricle. It may be seen in cases with Chiari type 2 malformation, too. We report a 20-month-old boy with isolated fourth ventricle presenting with weakness in his arms. He had been treated for myelomeningocele and hydrocephalus in the neonatal period and followed for Chiari type 2 malformation. The isolated fourth ventricle developed in the presence of a well-functioning lateral ventricle shunt. He was treated with a new shunt into the fourth ventricle.

Keywords: Chiari malformation type 2, hydrocephalus, isolated fourth ventricle