What is the role of lab studies in the workup of cavernous sinus thrombosis (CST)?

Updated: Jul 16, 2018
  • Author: Rahul Sharma, MD, MBA, FACEP; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Cavernous sinus thrombosis (CST) is a clinical diagnosis and lab studies are seldom specific. Most patients exhibit a polymorphonuclear leukocytosis, often marked with a shift toward immature forms. Examination of the cerebrospinal fluid is consistent with either a parameningeal inflammation or frank meningitis. Blood culture results generally are positive for the offending organism.

One study by Misra et al showed that a D-dimer may be useful in patients with suspected cortical sinus venous thrombosis (CSVT). [4]

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