Open-Ring Sign in Tumefactive Demyelination

  • Suresh C J Chandran, MD (AIIMS), DM(Neuro), DNB(Neuro), PGCC, Kerala Institute of Medical Sciences, Thiruvananthapuram.
Keywords: Hemiparesis, Hyperreflexia, Hemianaesthesia, Open ring sign

Abstract

A 20-year old gentleman presented with one- week history of headache and progressive left hemiparesis. There was asymmetric hyperreflexia in all four limbs (left>right), left hemianesthesia and left plantar was extensor. MRI brain showed multiple lesions in bilateral centrum semiovale, bilateral parietal and right paraventricular regions.
The open-ring sign is often present in large, contrast-enhancing demyelinating lesions and helps to differentiate them from neoplasms and infections that usually show complete ring enhancement.

Author Biography

Suresh C J Chandran, MD (AIIMS), DM(Neuro), DNB(Neuro), PGCC,, Kerala Institute of Medical Sciences, Thiruvananthapuram.

Diplomate European Board of Neurology, Department of Neurology

Published
2014-06-25
How to Cite
Chandran, S. (2014). Open-Ring Sign in Tumefactive Demyelination. Kerala Medical Journal, 7(2), 45-46. https://doi.org/10.52314/kmj.2014.v7i2.324
Section
Case Series / Case Report