Sigmoid sinus

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Sigmoid sinus (Fig .: Pars sigmoid. )

The sigmoid sinus is one of the venous blood conductors of the brain ( sinus durae matris ) and the main drainage route of the venous cerebral blood. It is the continuation of the transverse sinus and runs in an S-shape on the floor of the posterior fossa . The blood discharge takes place at the jugular foramen into the internal jugular vein .

The bone lamella between the sigmoid sinus and the tympanic cavity is only very thin, which is why middle ear suppuration can break into the sinus and cause sinus vein thrombosis .


  • Jochen Fanghänel et al .: Waldeyer - Human Anatomy . 17th edition, Verlag Walter de Gruyter 2009, ISBN 9783110221046 , p. 453.
  • Walther Graumann, Dieter Sasse: Compact textbook anatomy . Volume 4, Schattauer Verlag 2005, ISBN 9783794520640 , p. 221.