PMC8077373_01
a Axial T2 brain MRI showing a wedge-shaped segmental hyperintense lesion in the left paramedian pons. b Axial T1 brain MRI showing a wedge-shaped segmental hypointense lesion in the left paramedian pontine region. c Sagittal T2 brain MRI showing a wedge-shaped segmental hyperintense lesion extending from the basis pontis to the tegmentum pontis, indicating subacute infarction.
crn-0013-0239-g01.jpg
PMC8077373_01_crn-0013-0239-g01.jpg
F1
The lesion had T2 and T1 abnormal prolongation with no diffusion restriction, suggesting a subacute pontine infarct (Fig. 1).
a Both the common carotid artery and the internal and external carotid arteries were normal and patent, and the circle of Willis and its major branches were well demonstrated. b Both vertebral arteries were well visualized and normal.
crn-0013-0239-g02.jpg
PMC8077373_01_crn-0013-0239-g02.jpg
F2
Magnetic resonance angiography showed normal common carotid, internal carotid, external carotid, and vertebrobasilar arteries (Fig. 2).
a Axial T2 brain MRI showing a segmental hyperintense lesion in the left paramedian pons. b Sagittal T2 brain MRI showing a segmental hyperintense lesion extending from the ventral to the dorsal pons, indicating chronic paramedian pontine perforator infarction.
crn-0013-0239-g03.jpg
PMC8077373_01_crn-0013-0239-g03.jpg
F3
The follow-up brain MRI showed radiological evidence of chronic paramedian pontine perforator infarction (Fig. 3).