Thrombosis-of-cerebral-veins-and-venous-sinuses

Thrombosis of Cerebral Veins and Venous Sinuses


Cerebral veins – anatomy
Veins of the brain, unlike those of the rest of the body, do not run together with arteries

Venous system of the brain:

 Superficial venous system

 Deep venous system

Superficial venous system
Superior Cerebral Group

 Drain the dorsolateral and dorsomedial surfaces of the hemisphere

 Enter the superior sagittal sinus

 The most proeminent of these veins is in the central sulcus – the superior
anastomotic vein of Trolard – interconnects the superior and middle group of
veins

Middle Cerebral Group

 These veins run along the sylvian fissure

 Drain the inferolateral surface of the hemisphere

 Open into the cavernous sinus

Inferior Cerebral Group

 Drain the inferior surface of the hemisphere

 Open into the cavernous and transverse sinuses

 The inferior anastomotic vein of Labbe interconnects the middle and inferior
groups

The medial surface of the hemisphere in drained by a number of veins that open into the
superior and inferior sagittal sinuses, as well as into the basal vein and the great cerebral
vein of Galen




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, Deep venous system
Consists in a number of veins that drain into two main tributaries: the internal cerebral
vein and the basal vein of Rosenthal;

These two join beneath the splenium of corpus callosum to form the great cerebral
vein of Galen, which opens into the straight sinus

Because of the many anastomotic interconnections within the deep venous system,
only simultaneous obstruction of the great cerebral vein and the basal vein of Rosenthal
will effectively obstruct deep venous flow




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