Presentation
Right-sided hemiparesis
Patient Data
Age: 55 years
Gender: Female
From the case:
Hyperdense MCA sign
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M1 and M2 segments of the left MCA are hyperdense.
Triangular hypodense areas are seen in the left lentiform nucleus, external capsule and insular cortex resulting in loss of gray white differentiation.
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Annotated axial non-contrast image shows hyperdense left MCA.
Case Discussion
Hyperdense MCA sign refers to intraluminal thromboembolic material within the middle cerebral artery. It is the earliest visible sign of an MCA infarction.
Sometimes, atherosclerosis, polycythemia, or hemoconcentration may mimic this condition.
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