Presentation
Acute left upper and lower limb weakness
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
From the case:
MCA dot sign
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MCA "dot" sign (arrow)
From the case:
MCA dot sign
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Magnified view demonstrating a hyperdense 'dot' in the anterior sylvian fissure.
Case Discussion
The hyperattenuation of the MCA dot sign represents a thromboembolus within a segmental branch of the MCA located within the Sylvain fissure. The sign appears when the high-attenuation MCA is viewed in cross-section, since the occluded vessel courses in a plane perpendicular to the transverse plane of imaging.
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