Osmotic demyelination syndrome: pontine and extrapontine involvment
On viewing the imaging findings, history of recent treatment was looked into. Hyponatremia at time of admission was 104 mEq, corrected to 121 mEq within 24hrs.
In the background of such a history with normal MRA, a diagnosis of central pontine myelinolysis with extra pontine myelinolysis involving bilateral basal ganglia was made. These conditions are now grouped under the term osmotic demyelination syndrome.