• Brit Long, Steven M Field, Manpreet Singh, and Alex Koyfman.
• Department of Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, TX, USA. Electronic address: Brit.long@yahoo.com.
• Am J Emerg Med. 2024 Sep 1; 83: 475347-53.

IntroductionCavernous sinus thrombosis (CST) is a serious condition that carries with it a high rate of morbidity and mortality.ObjectiveThis review highlights the pearls and pitfalls of CST, including presentation, diagnosis, and management in the emergency department (ED) based on current evidence.DiscussionCST is a potentially deadly thrombophlebitic disease involving the cavernous sinuses. The most common underlying etiology is sinusitis or other facial infection several days prior to development of CST, though other causes include maxillofacial trauma or surgery, thrombophilia, dehydration, or medications. Staphylococcus aureus, streptococcal species, oral anaerobic species, and gram-negative bacilli are the most frequent bacterial etiologies. The most prevalent presenting signs and symptoms are fever, headache, and ocular manifestations (chemosis, periorbital edema, ptosis, ophthalmoplegia, vision changes). Cranial nerve (CN) VI is the most commonly affected CN, resulting in lateral rectus palsy. Other CNs that may be affected include III, IV, and V. The disease may also affect the pulmonary and central nervous systems. Laboratory testing typically reveals elevated inflammatory markers, and blood cultures are positive in up to 70% of cases. Computed tomography of the head and orbits with intravenous contrast delayed phase imaging is recommended in the ED setting, though magnetic resonance venography demonstrates the highest sensitivity. Management includes resuscitation, antibiotics, and anticoagulation with specialist consultation.ConclusionAn understanding of CST can assist emergency clinicians in diagnosing and managing this potentially deadly disease.Published by Elsevier Inc.

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