Right M1 infarct (thrombectomy)

Case contributed by Derek Smith
Diagnosis certain

Presentation

Collapse with left sided weakness, neglect and poor speech. Imaged between 60-90 minutes from onset. NIHSS 21.

Patient Data

Age: 70 years
Gender: Male
This study is a stack
Axial
non-contrast
This study is a stack
Coronal
non-contrast
This study is a stack
Axial C+
arterial phase
Axial
MIP
This study is a stack
Coronal C+
arterial phase
Coronal
MIP
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Info

Hyperdensity in right M1 vessel. Reduced attenuation of right insular cortex and lentiform nucleus. No other established MCA territory infarct. ASPECTS 8.

Old left PCA territory / occipital infarct.

No haemorrhage or mass.

Angiogram confirms right M1 occlusion. Tortuous cervical ICAs with minor calcific but non-flow limiting stenosis of the carotid bulbs.

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IV tPA administered on transfer to neurointervention suite.

This study is a stack
Pre-retrieval Internal
carotid artery
This study is a stack
Stent position Internal
carotid artery
This study is a stack
Post-retrieval Internal
carotid artery
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Info

Onset-to-skin puncture time: 136 minutes

Onset-to-reperfusion time: 157 minutes

Right M1 clot retrieved on first pass; TICI 3.

NIHSS 3 immediately post-treatment.

24 hours post thrombectomy

ct
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Info

Maturing infarct in right lenticulostriate territory, including caudate head, anterior limb of internal capsule, lentiform nucleus. Central speckled hyperattenuation considered contrast staining. No haemorrhagic transformation.

Case Discussion

This patient presented with a high NIHSS, some lateralising signs and general confusion with speech disturbance and neglect.

Unenhanced CT and CTA were performed (the patient was considered too agitated for multiphase CTA / perfusion). A right M1 occlusion was confirmed, with early insular / lenticuostriate infarct.

The clot was evacuated on first pass, with good clinical and radiographic outcomes.

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Case courtesy of Dr Alberto Nania, INR consultant

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