Department of Pathology, Cheil General Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea.
J Korean Med Sci. 2010 Jun;25(6):970-3. doi: 10.3346/jkms.2010.25.6.970. Epub 2010 May 24.
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.
我们报告两例尸检病例，均显示透明隔部分缺失伴脑室扩大。在每个病例中，大脑显示侧脑室额角轻度扩张，第三和第四脑室正常，没有导水管狭窄。透明隔的后部分缺失，穹窿融合成单个中线结节，异常地向尾侧移位并嵌入 Monro 孔。脑底未见明显异常；视神经发育良好。我们的结论是，在透明隔缺失的情况下，尾侧移位的穹窿可能间歇性地阻塞 Monro 孔，导致轻度脑室扩大。
