PINEALOMA OF DIFFUSE EPENDYMAL ORIGIN

摘要: The pineal body makes its first appearance in man at about the second fetal month as a cellular mass and an evagination roof of diencephalon. two structures fuse, cavity united deepens to form recess. cells lining recess develop cilia come resemble ependyma closely. histogenesis itself is complicated, but parenchymal seem from ependymal anlages. Several facts support this opinion, particular occurrence tubules possession blepharoplasts processes by cells. At sixth month, masses small, darkly staining cells, thought Globus Silbert,1Bailey2and others be mesenchymal origin, appear conjunction with connective tissue blood vessels. These smaller mosaic