Sinus sigmoideus

Sigmoid sinus

• Lateral superfical veins of the brain - Ganzer Fall bei Radiopaedia

Gaillard F, Lateral superfical veins of the brain. Case study, Radiopaedia.org (Accessed on 25 Jan 2023) https://doi.org/10.53347/rID-36181 • CC by-nc-sa 3.0 (modified)

Cranial

sinuses, with black pointer lines and source smudges.

Wikipedia • Public domain

Dural venous

sinuses • Dural venous sinuses (illustration) - Ganzer Fall bei Radiopaedia

Gaillard F, Dural venous sinuses (illustration). Case study, Radiopaedia.org (Accessed on 25 Jan 2023) https://doi.org/10.53347/rID-36180 • CC by-nc-sa 3.0 (modified)

Sigmoid sinus

• Cerebral veins (annotated DSA) - Ganzer Fall bei Radiopaedia

Gaillard F, Cerebral veins (annotated DSA). Case study, Radiopaedia.org (Accessed on 25 Jan 2023) https://doi.org/10.53347/rID-36179 • CC by-nc-sa 3.0 (modified)

Cerebral

venous thrombosis • Brain venous vascular territories (diagram) - Ganzer Fall bei Radiopaedia

Hacking, C. Brain venous vascular territories (diagram). Case study, Radiopaedia.org. (accessed on 20 Oct 2022) https://doi.org/10.53347/rID-80107 • CC by-nc-sa 3.0 (modified)

Superior

sagittal sinus • Dural venous sinuses (Gray's illustrations) - Ganzer Fall bei Radiopaedia

Hacking, C. Dural venous sinuses (Gray's illustrations). Case study, Radiopaedia.org. (accessed on 21 Oct 2022) https://doi.org/10.53347/rID-95566 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

The sigmoid sinus 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 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.