Sigmoid sinus

Last revised by Craig Hacking ◉ ◈ on 20 Dec 2021

Citation, DOI & article data

Citation:

Gaillard F, Hacking C, Bell D, et al. Sigmoid sinus. Reference article, Radiopaedia.org (Accessed on 05 Feb 2023) https://doi.org/10.53347/rID-5250

DOI:

https://doi.org/10.53347/rID-5250

Permalink:

https://radiopaedia.org/articles/5250

rID:

5250

Article created:

25 Dec 2008 by Frank Gaillard ◉ ◈

Revisions:

15 times by 6 users - see full revision history

Systems:

Vascular, Central Nervous System

Sections:

Anatomy

Synonyms:

Sigmoid sinuses

The sigmoid sinus (plural: sigmoid sinuses) is a paired structure and one of the dural venous sinuses. It is the continuation of the transverse sinus (which is similarly variable in size) and becomes the sigmoid sinus as the tentorium cerebelli ends. It is here that the sinus receives the superior petrosal sinus.

It passes inferiorly in an "S"-shaped groove posteromedial to the mastoid air-cells to the jugular foramen, where it ends in the jugular bulb, in the posterior half of the foramen (pars vascularis). It has connections via mastoid and condylar emissary veins with pericranial veins.