What does the following MRI of the brain report mean? There is a small chronic lacunar infarct versus a dilated perivascular space in the posterior left centrum semiolale. A small chronic lacunar infarct in the left thalamus is observed. There is no evidence of restricted diffusion to suggest acute infarction in the brain parenchyma. There is a mildly prominent CSF overlying the cerebral hemispheres secondary to moderate generalized cerebral and cerebellar volume loss rathat than subdural hygromas. The ventricles and basilar cisterns are normal in size.
Lacuna infarction are ischemic brain lesions less than 1 cm in diameter. The first one described is not sure to be an infarction as it can also be a dilated perivascular space, witch can be a variation of normal anatomy or changes through a persons' life. I don't understand well the sentence before the last, but I suppose it's a brain atrophy caused by an old subdural hemorrhage. You should see a neurologist to value the risk factors for cerebral vascular disease and to treat the patient properly.