Interested in submitting an e-Pearl? Click here!
Brought to you by the Resident and Fellow Section of Neurology®.
December 12, 2011
The empty delta sign may be seen on a contrast-enhanced computed tomographic (CT) scan of the brain in a patient with sagittal sinus venous thrombosis. The sign consists of a triangular area of enhancement or high attenuation with a relatively low-attenuating center on multiple contiguous transverse CT images obtained in the region of the superior sagittal sinus. This has been reported in approximately 28% of patients with superior sagittal sinus thrombosis.
1. Virapongse C, Cazenave C, Quisling R, Sarwar M, Hunter S. The empty delta sign: frequency and significance in 76 cases of dural sinus thrombosis. Radiology 1987; 162:779-785.
Submitted by: Vijayamala Bondugula, MD
Disclosures: Dr. Bondugula reports no disclosures.
For more clinical pearls and other articles of interest to neurology trainees, visit www.neurology.organd click on the link to the Resident and Fellow Pages. Click here to visit the E-Pearl of the Week Archive.
Click here to listen to this week's Neurology® Podcast.