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Abstract: The sphenoid sinus was dissected in 50 adult bodies, which were separated in groups according to age, sex, rate and side (left or right). The following measurements were made: volume, length, width and height of the sphenoid sinus; distant from the anterior nasal spine to the sphenoid ostium, and the distant from the sphenoid ostium to the anterior wall of the sella turcica. After that, the data were statistically studied according to the groups above mentioned.
In each case, the relationship between the sinus and near structures was established. The main near structures were: optic nerves, maxilar nerves, vidian nerves, internal carotid artery, sella turcica and anterior cranial fosse.
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