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KMID : 0191120100250060970
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Journal of Korean Medical Science
2010 Volume.25 No. 6 p.970 ~ p.973
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Absence of the Septum Pellucidum Associated with a Midline Fornical Nodule and Ventriculomegaly: A Report of Two Cases
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Chun Yi-Kyeong
Kim Hye-Sun
Hong Sung-Ran
Chi Je-G.
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Abstract
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We report two autopsy cases that revealed the partial absence of the septum pellucidum with ventriculomegaly. In each case, the brain showed mild dilatation of both frontal horns of the lateral ventricles, normal third and fourth ventricles and no aqueductal stenosis. The posterior portion of the septum pellucidum was absent and the fornices were fused in a single midline nodule, abnormally displaced to a caudal position and lodged in the foramina of Monro. The brain base showed no apparent abnormalities; the optic nerves were well developed. We conclude that the caudally displaced fornix in the absence of the septum pellucidum may have intermittently obstructed the foramina of Monro and induced mild ventriculomegaly.
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KEYWORD
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Septum Pellucidum, Fornix, Brain, Hydrocephalus, Ventriculomegaly
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