What is Intercavernous sinus?
The intercavernous sinuses (anterior, posterior, and inferior) are variable dural venous sinuses that connect the left and right cavernous sinuses. Some authors also include in this group the basilar venous plexus (basilar sinus) and sinus of the dorsum sellae 2.
Where does intercavernous sinus drain to?
Intercavernous sinuses and drainage These vessels travel anteriorly and posteriorly (respectively) around the infundibulum of the pituitary gland, deep to the diaphragma sellae, between the layers of dura mater. The cavernous sinus in turn drains to the superior and inferior petrosal sinuses.
Where is the cavernous sinus located?
The cavernous sinus is located on either side of the pituitary fossa and body of the sphenoid bone between the endosteal and meningeal layers of the dura. It spans from the apex of the orbit to the apex of the petrous temporal bone.
Where is the inferior petrosal sinus?
The inferior petrosal sinuses are two small sinuses situated on the inferior border of the petrous part of the temporal bone, one on each side. Each inferior petrosal sinus drains the cavernous sinus into the internal jugular vein. The sinuses at the base of the skull.
What causes cavernous sinus syndrome?
A CSS is caused by any pathology or lesion present within the cavernous sinus that disrupts the function of other anatomical structures. The most common cause of CSS is mass effect from tumor. Other common causes of CSS include trauma and self-limited inflammatory disease.
Which nerve is in the cavernous sinus?
The nerves of the cavernous sinus are the oculomotor nerve (CN III), trochlear nerve (CN IV), ophthalmic nerve (V1), maxillary nerve (V2), abducens nerve (CN VI), and the sympathetic plexus around the internal carotid artery.
What does the inferior petrosal sinus drain into?
The inferior petrosal sinus is a paired cranial venous channel that drains the cavernous sinus, midbrain, cerebellum and inner ear. This dural venous sinus emerges from the cavernous sinus within the middle cranial fossa and drains into the internal jugular vein.
What is inferior petrosal sinus sampling?
Inferior petrosal sinus sampling (IPSS) is an invasive procedure in which adrenocorticotropic hormone (ACTH) levels are sampled from the veins that drain the pituitary gland; these levels are then compared with the ACTH levels in the peripheral blood to determine whether a pituitary tumor (as opposed to an ectopic …
What does the inferior sagittal sinus drain into?
The inferior sagittal sinus is one of the dural venous sinuses and runs along the inferior (free) edge of the falx cerebri 1. It runs from anterior to posterior, the same as the superior sagittal sinus, and drains into the straight sinus.
Is the cavernous sinus in the brain?
Cavernous sinuses drain the blood from the orbits through the ophthalmic veins and from the anterior part of the base of the brain by the sphenoparietal sinus and the middle cerebral veins. They empty into both the superior and inferior petrosal sinuses and ultimately into the internal jugular veins.
What is the intercavernous sinus?
Intercavernous sinus. The intercavernous sinus (anterior and posterior) are dural venous sinuses and connect the left and right cavernous sinuses, along with the basilar venous plexus. They lie in the anterior and posterior borders of the diaphragma sellae. Additional small venous sinuses in the base of the pituitary fossa drain into…
Is the inferior intercavernous sinus plexiform?
In the sagittal plane, the inferior intercavernous sinus was positioned anteriorly in 31 %, at the nadir of the sella turcica in 38 %, and slightly posterior to the nadir of the sella turcica in 31 %. In two specimens (15.4 %), the sinus was plexiform in its shape.
What is the difference between the intercavernous and basilar sinuses?
The intercavernous sinus (anterior and posterior) are dural venous sinuses and connect the left and right cavernous sinuses, along with the basilar venous plexus.
What is the management of superior intercavernous sinus with isolation?
Management of the superior intercavernous sinus with its isolation is done with two horizontal incisions and bipolar coagulation, in case of craniopharyngiomas, and by coagulation in meningiomas.
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