Medial – body of the sphenoid bone. CA are the components within the sinus, from medial to lateral. 3. Cavernous Sinus Thrombosis: The veins of the face drain blood into the cavernous sinus via the superior ophthalmic vein. The cavernous sinus is located on either side of the pituitary fossa and body of the sphenoid bone in the middle cranial fossa, wrapped between the endosteal and meningeal layers of the dura. The cavernous sinus is one of the dural venous sinuses of the head. Cerebral Venous Thrombosis . Balo (1950), in histological studies, could find no true cavernous tissue in the walls ofthe humancavernous sinus. Nearby structures. 2. ADVERTISEMENT: Radiopaedia is free thanks to our supporters and advertisers. The purpose of this article was to review the anatomy of the cavernous sinus (CS), illustrate numerous lesions that can affect the CS, and emphasize the imaging characteristics for each lesion to further refine the differential diagnoses. 5.1 Cavernous sinus thrombosis; 5.2 Share this: Safdieh JE. The dural sinuses and the cerebral and emissary veins have no valves, which allows blood to flow in either direction (anterograde or retrograde) according to venous pressure gradients in the vascular system. An anatomical study and review of the literature. ADVERTISEMENT: Supporters see fewer/no ads, Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. These can be remembered with the mnemonic O TOM CAT. Cavernous sinus thrombophlebitis caused by paranasal sinusitis in 62-year-old woman with right ocular pain and diplopia due to oculomotor, trochlear, and abducens nerve palsy. A 67-year-old man exhibited long-standing left third nerve palsy. The cavernous sinus is an important structure because of its location and its contents which include the third cranial (oculomotor) nerve, the fourth cranial (trochlear) nerve, parts 1 (the ophthalmic nerve) and 2 (the maxillary nerve) of the fifth cranial (trigeminal) nerve, and the sixth cranial (abducens) nerve. Learn faster with spaced repetition. Cavevernous sinuses and contents segmented from a CTA of the head and MRI cisternogram. Unlike other dural venous sinuses, it is divided by numerous fibrous septa into a series of small caves, which is where its name is derived from. 1. A, Coronal T2-weighted image shows asymmetric bulging of right cavernous sinus (arrows). The cavernous sinus is one of the dural venous sinuses of the head. The CS, notwithstanding its small size, contains a complicate … The borders of the cavernous sinus are as follows: Anterior – superior orbital fissure. © 2021 Bold Learning Solutions. Above: optic tract, optic chiasma, internal carotid artery. (2008) ISBN:0443066841. Cavernous sinus thrombosis is usually caused by a bacterial infection that spreads from another area of the face or skull. Browse over 1 million classes created by top students, professors, publishers, and experts. The carotid siphon of the internal carotid artery, and cranial nerves III, IV, V (branches V 1 and V 2) and VI all pass through this blood filled space.. Significant findings were: 1) the abducent nerve in the cavernous sinus was observed as one rootlet in most of the specimens (78%), … Skin And Muscles Of The Face (Dave's Notes), Blood Supply , Venous And Lymphatic Drainage Of The Face (Dave's Notes), Temporal Fossa, Zygomatic Arch, Temporalis Fascia And Temporalis (Dave's Notes), Pterygopalatine Ganglion, Maxillary Vessels (Dave's Notes), External Nose And Nasal Cavity (Dave's Notes), Vestibule And Cavity Of The Mouth (Dave's Notes), Orbit, Eyelids, Conjunctiva, Lacrimal Apparatus (Dave's Notes), Muscles Of The Orbit, Stability Of The Eye, Nerves Of The Orbit (Dave's Notes), Vessels Of The Orbit, Movements Of The Eyes, Structure Of The Eye And Refracting Media (Dave's Notes), Lymphatic Drainage Of The Head And Neck (Dave's Notes), Tmj (Dave's Notes) Get Hold Of Dunedin Notes Or Make Your Own, Auditory Tube, Mastoid Antrum And Air Cells (Dave's Notes), Pharynx Superior And Middle Constrictors (Dave's Notes), Pharynx Inferior Constrictor (Dave's Notes), Nasopharynx And Interior Of The Oropharynx (Dave's Notes), Cranial Cavity General Arrangement (Dave's Notes), The Cavernous Sinus Boundaries (Dave's Notes), The Posterior Cranial Fossa (Dave's Notes), The Vertebral Canal And Spinal Meninges (Dave's Notes), The Cavernous Sinus Contents And Surrounding Structures (Dave's Notes), The Pituitary Gland, Other Nearby Structures, And The Trigeminal Ganglion (Dave's Notes). 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