What is the explanation of mri brain left thalamic and internal capsule infarction?

Small Stroke.: Those findings are small strokes of specific areas of the brain that are subcortical or below the cortex. Two of the three mechanisms for those strokes are related to a chronic vascular disease associated with hypertension. Other likely risk factors include diabetes mellitus and possibly smoking. Symptoms will depend on what was affected. See your Neurologist or PCP. Not a 'classic stroke'.

MRI brain w infarct: This study should be discussed thoroughly with the doc. Diagnosis can't be made w/o clinical correlation. An infarct is a stoke, caused by lack of blood flow to the named areas leading to cell death. A l thalamic infarct should result in either behavioral/cognitive changes or sensorimotor deficits, or both. Internal capsule infarct may result in facial paralysis, arm weakness, & sensory loss.