The superior sagittal sinus drains blood from cortical veins of the cerebral hemispheres, veins of the falx cerebri and meninges, diploic veins of the skull and emissary veins from the scalp. It empties into the confluence of sinuses in the occipital region.
What sinus does the superior sagittal sinus directly drain into?
transverse sinus
The superior sagittal sinus drains into the transverse sinus. The transverse sinuses also receive venous drainage from small veins from both the middle ear and the mastoid cells. The transverse sinus becomes the sigmoid sinus before draining into the internal jugular vein.
Is the superior sagittal sinus a vein?
The superior sagittal sinus is a midline vein without valves or tunica muscularis that courses along the falx cerebri, draining many of the cerebral structures surrounding it.
When should you suspect CVT?
When to suspect a diagnosis of CVT 1,2,4,–6 A diagnosis of CVT should be considered in cases such as the present one, during clinical conditions such as pregnancy or puerperium, and in patients using oral contraceptives (OC) or hormonal replacement therapy.
What is the superior sagittal sinus function?
The purpose of the superior sagittal sinus is to carry waste and fluids away from the brain as veins do throughout the rest of the body.
What is superior sagittal sinus thrombosis?
Superior sagittal sinus thrombosis is a rare but serious condition presenting with symptoms and signs of raised intracranial pressure, such as headache, vomiting, and papilloedema. Convulsions and haemorrhagic cerebral infarction are well recognised complications.
Which vein connects the superior sagittal sinus to the superficial temporal vein?
Occipital emissary vein: joins the occipital vein and the transverse sinus. Parietal emissary vein: joins branches of the superficial temporal vein of the scalp to the superior sagittal sinus. Ophthalmic emissary veins: join the vessels draining the orbital structures to the cavernous sinus.
Where are bridging veins?
Bridging veins are veins in the subarachnoid space that puncture the dura mater and empty into the dural venous sinuses.
How do you rule out a CVT?
The key to diagnosis is the imaging of the venous system itself, which may show the occluded vessel or the intravascular thrombus. The current gold standard for CVT diagnosis is the combination of MRI to visualize the thrombosed vessel and magnetic resonance venography to detect the nonvisualization of the same vessel.
What is sinus vein thrombosis?
Cerebral venous sinus thrombosis (CVST) occurs when a blood clot forms in the brain’s venous sinuses. This prevents blood from draining out of the brain. As a result, blood cells may break and leak blood into the brain tissues, forming a hemorrhage.
What veins drain into cavernous sinus?
The cavernous sinuses receive blood from the superior ophthalmic vein of the orbit, along with the superficial middle cerebral vein of the brain, and other sources. They drain through the transverse sinus, internal jugular vein, and facial vein.
