We report a 70-year-old man with central pontine myelinolysis who presented in the emergency department with recent onset altered sensorium and tremors (Glasgow Coma Scale score, 13). Laboratory findings revealed hyponatremia and hypokalemia. MRI brain was unremarkable. Subsequently, patient was referred for FDG PET/CT to rule out malignancy or paraneoplastic syndrome. FDG PET revealed focal radiotracer uptake in the pons without any underlying CT abnormality consistent with central pontine myelinolysis, thus aiding in early diagnosis where conventional imaging modality was unremarkable.
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