Cavernous sinus

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Cavernous sinus, contents, clinical importance

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  • Dear Doctor Asarma,
    Excellent presentation with amazing illustrations of CS . Thank you for sharing.
    I prepare so called 'Subooccipital Cavernous Sinus' . Suboccipital vein compartment is not stritcly cavernous sinus, but the anatomy of the structure is still controversial and complicated with many variations. It is particullary important in Far LAteral Approach.
    Kindly regards,
    Dr Tomasz Skaba
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  • Congratulations.
    Great work, perfect presentation.
    Sincerely,
    Dr Tomasz Skaba
       Reply 
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Cavernous sinus

  1. 1. 2 cms long 1 cm wide Situated in middle cranial fossa on the sides of body of sphenoid Anterior – sup. Orbital fissure Posterior - Apex of petrous temp. bone Floor & medial wall – endosteal layer of dura Roof & lateral Wall - meningeal layer of dura CAVERNOUS SINUS
  2. 2. Structure passing through 1. Int. carotid surrounded by venous and sympathetic plexuses 2. Abducent N. (Inf. lat. to carotid art.) Structures in lateral wall 1. Oculomotor N. 2. Trcochlear N. 3. Ophthalmic N. 4. Maxillary N.
  3. 3. External relations 1. Above – Optic chiasma, backward and upward turn of carotid – carotid siphon 2. Medial – Hypophysis cerebri 3. Lateral – Posterolateral part cavumtrigeminale containing ganglion 4. Below - Shenoid sinus
  4. 4. Tributaries 1. Sup. Ophthalmic vein 2. Branch of Inf. Ophthalmic vein 3. Central vein of retina 4. Superficial middle cererbal vein 5. Inferior cerebral veins 6. Sphenoparietal sinus 7. Anterior / Frontal trunk of middle meningeal vein
  5. 5. Communications 1. Transverse sinus via Sup. petrosal sinus 2. Int. Jugular vein through inf. petrosal sinus 3. Pterygoid venous plexus through emissary veins - foramen ovale, spinosum and lacerum 4. Facial vein through sup. Ophthalmic vein & angular vein or pterygoid venous plexus and deep facial vein 5. Opp. Cavernous sinus through ant / post intercavernous sinuses 6. Sup. Sag. Sinus through Middle cerebral vein and vein & sup. Anastomotic vein
  6. 6. Sphenoparietal Cavernous Ant. intercavernous Sup. petrosal Inf. petrosal Transverse Sigmoid Occipital
  7. 7. Pituitary gland 3 4 V.1 V.2 Sphen. Air sinus 6 Int.Car.art. Cavern. Sinus
  8. 8. Int. carotid art.Infundibulum Hypophysis Oculomotor Trochlear Ophthalmic Maxillary Int. carotid Mandibular Abducent
  9. 9. Cavernous sinus thrombosis
  10. 10. Cavernous sinus thrombosis
  11. 11. Cavernous sinus thrombosis Cause: Sepsis dangerous area of face, paranasal sinuses, nasal cavities Neurological – severe pain eye anf forehead Ophthalmic n. Paralysis of ocular muscles – - 3rd , 4th and 6th n. Venous block – oedema of eye lids, cornea, nose exophthalmos Injury causing communication between cavernous sinus and carotid leads to pulsating exophthalmos
  12. 12. Sinogram
  13. 13. Carotid siphon

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