MCA dot sign

Case contributed by Dr Bruno Di Muzio


Left hemiparesis.

Patient Data

Age: 62
Gender: Male

CT Brain

There is a high-attenuation MCA branch viewed on right Sylvian fissure. A small area of hypoattenuation is seen on adjacent parenchyma (ischemia).

Case Discussion

The dot sign represents a thromboembolus within a segmental branch of the MCA located within the Sylvian fissure. It's an early marker of thromboembolic occlusion. 

PlayAdd to Share

Case information

rID: 25414
Published: 24th Oct 2013
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.