Presentation
Known case of polycythemia, smoker, sudden onset left arm weakness 2 weeks ago - ? stroke.
Patient Data
Age: 55 years
Gender: Male
From the case:
Occipital lobe infarct with cortical T1 shortening
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Late subacute to chronic infarcts are noted in the watershed areas of right parieto-occipital lobe and frontal lobe cortex and subcortical white matter regions with linear T1 cortical hyperintensities.
Case Discussion
T1 hyperintensities do not represent hemorrhage or calcium, rather they are due to accumulation of denatured proteins in dying cells and lipid-laden macrophages due to necrosis of neurons at cortex. They are typically seen after 2 weeks after the onset of stroke and peak at around 4 weeks' time.
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