The transverse sinus is one of the venous blood conductors of the brain ( sinus durae matris ). It lies between two sheets of the hard meninges ( dura mater ) on both sides at the base of the cerebellar tent up to the petrous pyramid . The sinus durae matris lacks a muscle layer typical of venous walls. The blood outflow takes place via the sigmoid sinus into the internal jugular vein . The transverse sinus occasionally exhibits anatomical deviations. It can be asymmetrical or one-sided.
The transverse sinus thrombosis (blood clot) is a thrombotic occlusion of the venous transverse sinus with potential congestive bleeding into the brain parenchyma . The sinus thrombosis are a relatively rare but feared cause of infarcts ( strokes ) of the brain. They are responsible for 1% of all strokes.
Jochen Fanghänel et al .: Waldeyer - Human Anatomy . 17th edition, Verlag Walter de Gruyter 2009, ISBN 9783110221046 , p. 453.