Upon further questioning the patient, she mentioned she had chronic renal failure on dialysis which was inadequately treated during the last period.

Basal ganglia T2 hyperintensity

A variety of causes might cause basal ganglia high T2 signal like:

• Hypoxic/ischemic
• metabolic
  • hepatic encephalopathy
  • uremic encephalopathy
  • hypoglycemic encephalopathy
• toxins
  • carbon monoxide neurotoxicity
  • cyanide neurotoxicity
  • ethylene glycol neurotoxicity
  • methanol neurotoxicity
  • organophosphate neurotoxicity

In case of uremic encephalopathy: lentiform fork sign: is a characteristic feature of uremic encephalopathy, in which the white matter surrounding the basal ganglia (the internal and external capsules and the medullary laminae) becomes hyperintense on T2/FLAIR

It's important to have detailed clinical and labratory data in case of high T2 basal ganglia signal in order to reach the correct diagnosis.