Old pontine infarction and hyperostosis frontalis interna

Case contributed by Mostafa Elfeky
Diagnosis almost certain

Presentation

History of old stroke with left-sided weakness.

Patient Data

Age: 60 years
Gender: Female
This study is a stack
Axial
FLAIR
This study is a stack
Axial
T2
This study is a stack
Axial
T1
This study is a stack
Coronal
T2
This study is a stack
Sagittal
T1
This study is a stack
Axial
SWI
This study is a stack
Axial
DWI
This study is a stack
Axial
ADC
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Info

A high T2 signal lesion is noted at the right side of the lower pons with hypointense signal on FLAIR and T1 reflecting encephalomalacia with no diffusion restriction, mostly representing old pontine infarction.

Involutional brain changes seen as widened sulci and slightly dilated ventricles. Multiple high T2 and FLAIR white matter foci involving periventricular white matter, corona radiata and centrum semiovale reaching subcortical white matter, mostly due to chronic cerebral small vessel disease.

Incidental note of thickened inner table of both frontal bones with overgrowth and irregular inner surface, in keeping with hyperostosis frontalis interna.

Case Discussion

Typical features of old pontine infarction, cerebral small vessel disease and hyperostosis frontalis interna. Pontine infarction is the territory of perforating branches of basilar artery.

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