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Cavernous Sinus Anatomy

By @rev.med

#Cavernous #Sinus #Anatomy #Skull #SkullBase
Cavernous Sinus ... By @rev.med #Cavernous ... Anatomy #Skull #SkullBase
Coronal diagram of cavernous sinus; notice how cranial nerve 6 is most medial and is often
Coronal diagram of cavernous ... injured within the cavernous ... #cavernous sinus
Proptosis - Differential Diagnosis - Unilateral vs Bilateral
Unilateral:
 • Infections (can become bilateral with cavernous sinus
bilateral with cavernous ... Infections (with cavernous ... Vascular - Cavernous ... - Carotid cavernous
Neuroanatomy of The cavernous sinuses (CS) :
The ICA & cranial nerves 3,4,6,V1,V2 travel through the
Neuroanatomy of The cavernous ... travel through the cavernous
Priapism: Pathogenesis

 - Post-cavernosal venous occlusion -> Post-cavernosal venous drainage is mechanically obstructed e.g. sickle cell
nitric oxide from cavernous ... pools in corpora cavernosa
Proptosis and Chemosis caused by Cavernous Sinus Fistula on Ocular Exam

This 73 presented for blurred, double
Chemosis caused by Cavernous ... #CCF #Carotid #Cavernous
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Pulsatile Exophthalmos on Physical Exam - Protrusion and Pulsation of the eyeball

The differential diagnosis of pulsatile
neurofibromatosis, carotid-cavernous
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Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
One-and-a-half Syndrome • Cavernous
Diplopia - Differential Diagnosis
Step 1: Consider Stroke
Step 2: Diplopia PLUS
 - Cavernous Sinus Syndrome
 - Infection
Diplopia PLUS - Cavernous
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
apex syndrome, Cavernous