Fig. 6. Cadaveric dissection after removal of the posterior wall of the sphenoidal sinus. The left yellow arrow marks a large vein running in the mucosa of the sphenoidal sinus and the right yellow arrow marks a vein on the septum of sinuses. The left white arrow marks the sella turcica. The right white arrow shows a trans-sellar vein arising from the vessels in the septum of sphenoidal sinuses.
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