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Cavernous sinus thrombosis

Cavernous sinus thrombosis is a blood clot in an area at the base of the brain.

Causes

The cavernous sinus receives blood from veins of the face and brain. The blood drains it into other blood vessels that carry it back to the heart. This area also contains nerves that control vision and eye movements.

Cavernous sinus thrombosis is most often caused by a bacterial infection that has spread from the sinuses, teeth, ears, eyes, nose, or skin of the face.

You are more likely to develop this condition if you have an increased risk of blood clots.

Symptoms

Symptoms include:

  • Bulging eyeball, usually on one side of face
  • Cannot move the eye in a particular direction
  • Drooping eyelids
  • Headaches
  • Vision loss

Exams and Tests

Tests that may be ordered include:

  • CT scan of the head
  • Magnetic resonance imaging (MRI) of the brain
  • Magnetic resonance venogram
  • Sinus x-ray

Treatment

Cavernous sinus thrombosis is treated with high-dose antibiotics given through a vein (IV) if an infection is the cause.

Blood thinners help dissolve the blood clot and prevent it from getting worse or recurring.

Surgery is sometimes needed to drain the infection.

Outlook (Prognosis)

Cavernous sinus thrombosis can lead to death if left untreated.

When to Contact a Medical Professional

Call your health care provider right away if you have:

  • Bulging of your eyes
  • Drooping eyelids
  • Eye pain
  • Inability to move your eye in any particular direction
  • Vision loss

References

Durand ML. Periocular infections. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, Updated Edition. 8th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 118.

Nath A, Berger J. Brain abscess and parameningeal infections. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 413.

    • Sinuses

      Sinuses - illustration

      The sinuses are hollow cavities within the facial bones. Sinuses are not fully developed until after age 12. When people speak of sinus infections, they are most frequently referring to the maxillary and ethmoid sinuses.

      Sinuses

      illustration

      • Sinuses

        Sinuses - illustration

        The sinuses are hollow cavities within the facial bones. Sinuses are not fully developed until after age 12. When people speak of sinus infections, they are most frequently referring to the maxillary and ethmoid sinuses.

        Sinuses

        illustration

      Review Date: 1/19/2018

      Reviewed By: Richard LoCicero, MD, private practice specializing in hematology and medical oncology, Longstreet Cancer Center, Gainesville, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

      The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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