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Cerebral venous sinus thrombosis (CVST), cerebral venous and sinus thrombosis or cerebral venous thrombosis (CVT), is the presence of a blood clot in the dural venous sinuses (which drain blood from the brain), the cerebral veins, or both.
Non-traumatic causes of hemorrhage includes: hypertension, cerebral amyloid angiopathy, hemorrhagic conversion of ischemic infarction, cerebral aneurysms, dural arteriovenous fistulae, cerebral venous sinus thrombosis, cerebral vasculitis and mycotic aneurysm. [3] More than half of all cases of intracranial hemorrhage are the result of ...
Non-developmental syndromes also directly or indirectly affect the Great Cerebral Vein of Galen, although they are extremely rare. These include superior vena cava syndrome (SVCS), and thrombosis of the lateral sinus, superior sagittal sinus, internal jugular vein, or of the Great Cerebral Vein of Galen itself. [citation needed]
The walls of the dural venous sinuses are composed of dura mater lined with endothelium, a specialized layer of flattened cells found in blood and lymph vessels.They differ from other blood vessels in that they lack a full set of vessel layers (e.g. tunica media) characteristic of arteries and veins.
The superior sagittal sinus (also known as the superior longitudinal sinus), within the human head, is an unpaired dural venous sinus lying along the attached margin of the falx cerebri. It allows blood to drain from the lateral aspects of the anterior cerebral hemispheres to the confluence of sinuses .
Confined to sinus wall, typically after thrombosis. Type II IIa - confined to sinus with reflux (retrograde) into sinus but not cortical veins. IIb - drains into sinus with reflux (retrograde) into cortical veins (10-20% hemorrhage). Type III Drains direct into cortical veins (not into sinus) drainage (40% hemorrhage). Type IV
The superior cerebral veins are several cerebral veins that drain the superolateral and superomedial surfaces of the cerebral hemispheres into the superior sagittal sinus. [1] There are 8-12 cerebral veins. [further explanation needed] They are predominantly found in the sulci between the gyri, but can also be found running across the gyri.
The superior sagittal sinus divides into two parts called the transverse sinuses where the falx cerebri meets the tentorium cerebelli. [3] The sigmoid sinus, which continues the transverse sinus, empties into the jugular vein at the jugular foramen. The internal jugular vein leaves the skull and travels downward to the neck. [3]