For the cavernous sinus, even though the major tributaries are related to the anterior circulation, sometimes these do not drain into cavernous sinus. Amongst the various venous connections of the cavernous sinus, the superior and inferior ophthalmic veins are important tributaries that drain into the cavernous sinus. Tributaries and Communications of Cavernous sinus Communications (Draining channels) Transverse sinus: via superior petrosal sinus; Internal jugular vein (IJV): via inferior petrosal sinus; Pterygoid venous plexus: via emissary veins (passing through foramen ovale, spinosum and lacerum) Facial vein: via superior ophthalmic vein It is a large venous space located each side of the body of sphenoid and sella tersica in the middle cranial fossa. ... Tributaries (incoming channels) of cavernous sinus. venous plexus on the internal carotid artery (ICA) to the clival (basilar) venous plexuses. The septic thrombosis of cavernous sinus may be caused by it's numerous communications. Cavernous sinus thrombosis (CST) refers to the formation of a clot within the cavernous sinus. Each cavernous sinus is a large venous space situated in the middle cranial fossa on either side of the body of sphenoid bone. The cavernous sinus (CS) is closely related to the osseous structures of the middle cranial fossa such as the sphenoid bone and the sella turcica. Thus it receives the following veins: ... Due to its communication with the cavernous sinus, infection of the superficial face may spread to the cavernous sinus, causing cavernous sinus thrombosis. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 4.2. Its interior is divided into a number of trabeculae or caverns. Communications Superior ophthalmic vein. When there is thrombosis of the sinus, there is impaired drainage of blood from the superior ophthalmic vein, thus leading to its engorgement. They may be involved with infections which can spread to it along the many tributaries. Blood volume in tributaries of the cavernous sinus. (b) anterior trunk of the middle meningeal vein. Gross Anatomy. 3. It is the most important venous sinus … Thrombosis of the cavernous sinus The facial vein communicates with the cavernous sinus via the angular vein. Cavernous sinus anatomy and its tributaries cavernous sinus thrombosis radiology The right and left cavernous sinuses are trabeculated dural venous sinuses situated on the lateral aspect of the sella turcica, extending from the superior orbital fissure to the petrous apex of the temporal bone. Too many Medical negligence Claims – Where is the fault? Cavernous sinus syndrome: It is caused by various parasellar pathological condition that involves cavernous sinuses along with cranial nerves (3,4,5,6), Internal carotid artery and sympathetic plexus due to its close anatomical association and gives rise to various signs and symptoms in different combinations in different diseases. The sphenoid bone is situated in the base of the skull and consists of a cuboid corpus containing the two sphenoid sinuses. Cavernous sinuses are paired dural venous sinuses located in the middle cranial fossa on the side of the body of sphenoid bone. The cavernous sinus contents (structures within the sinus proper and also in its lateral wall) and their relative positions can be recalled with the following mnemonic: O TOM CAT. The lateral wall, roof and medial wall are formed by the meningeal duramater. These layers fit snugly into each other in almost all locations except for certain avenues, where they split to accommodate the venous channels. Mnemonic for structures inside and beside cavernous sinus: O TOM CAT (Occulomotor nerve, Trochlear nerve, Ophthalmic branch of Trigeminal nerve, Maxiallary branch of Trigeminal nerve, Carotid artery, Abducens nerve). - floor of cavernous sinus is formed by the endosteal layer, while lateral wall,roof,and medial wall by the meningeal layer. lies on either side of the Hypophyseal fossa of sphenoid bone. patients with an angiographic diagnosis of carotid-cavernous sinus fistula; six were of the dural type and the ninth case was of a shunt from a cerebral hemisphere vascular malformation. (b) internal jugular vein via inferior petrosal sinus. Cavernous sinus thrombosis is usually caused by a bacterial infection that spreads from another area of the face or skull. the commonest cause of thrombosis is the passage of septic emboli from the damage area of face through facial vein 》deep facial vein》pterogid venous plexus 》emissary vein. 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