Wernicke's encephalopathy in a rectal cancer patient with atypical radiological features: A case report

BACKGROUND Wernicke's encephalopathy is a disease caused by thiamine deficiency. The lesions usually involve the periphery of the aqueduct, midbrain, tectum, third ventricle, papillary body, and thalamus. It is very rare to affect the vermis and cerebellar hemispheres. CASE SUMMARY We report a 77-year-old female patient admitted to the emergency department of our hospital for 2 d of unconsciousness. Brain magnetic resonance imaging showed increased diffusion weighted imaging signals in the bilateral thalamus, periventricular regions of the third ventricle, corpora quadrigemina, vermis, and cerebellar hemispheres. Wernicke's encephalopathy was considered. She was given thiamine therapy and became conscious after the treatment. CONCLUSION Wernicke's encephalopathy may have various imaging manifestations. Clinicians should keep in mind that Wernicke's encephalopathy may occur in patients who experience prolonged periods of malnutrition.