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Journal of Korean Neurosurgical Society 1974;3(2): 59-64.
An Anatomical Study on the Variations of the Venous Sinuses at the Torcular Herophili.
Sun Ho Chee
Department of Neurosurgery, Ewha Womans University School of Medicine, Seoul, Korea.
The anatomical pattern of the dural venous sinuses in the vicinity of their confluence was examinaed in 54 cases of human fetus. The classification introduced here by author was based upon the presence or absence of bifurcation of the superior sagittal and straight sinuses without regard to their sizes or to those of the transverse sinuses. Four types of pattern occurred;common pool type, double bifurcation type, straight sinus bifurcation type and superior sagittal sinus bifurcation type. In a total of 54 anatomical dissections, 28 cases(51.8%) were of the first type(common pool), 5 cases(9.3%) of the second(double bifurcation), 6 cases(11.1%) of the third(straight sinus bifurcation) and 15 cases(27.8%) of the fourth(superior sagittal sinus bifurcation) .
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