Superior sagittal sinus
Last edit by Alaric Steinmetz on
Synonyms: Superior sagittal sinus
ICD-11: XA81R3
The superior sagittal sinus is an intradural venous conduit of the brain.
Anatomy
The superior sagittal sinus runs along the upper edge of the longitudinal cerebral fissure and receives venous blood through the bridging veins. The venous outflow occurs via the confluence of sinuses via transverse sinus and sigmoid sinus into the internal jugular vein[^1].
Clinical Relevance
Sinus venous thromboses can occur in the superior sagittal sinus, thereby impairing venous outflow.
Tumors such as meningiomas can infiltrate the superior sagittal sinus and thereby impair venous outflow.
Intraoperative injuries to the superior sagittal sinus, such as during a craniotomy, can lead to severe venous hemorrhages.
The superior sagittal sinus can be involved in vascular malformations like dural arteriovenous fistulas (dAVFs) or arteriovenous malformations (AVMs).
Illustration


Imaging
The superior sagittal sinus can be visualized using various imaging modalities depending on the clinical question, such as in the venous phase of a contrast-enhanced CT scan, MRI or digital subtraction angiography.


