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Medical Term:

sigmoid sinus


the S-shaped dural venous sinus lying deep to the mastoid process of the temporal bone and immediately posterior to the petrous temporal bone; it is continuous with the transverse sinus and empties into the internal jugular vein as it passes through the jugular foramen.

Synonym(s): sinus sigmoideusTA

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.