The Case | A crystal-clear diagnosis: acute kidney injury in a patient with suspected meningoencephalitis (Make Your Diagnosis)

A 66-year-old man with no remarkable past history was referred to our department for suspected meningoencephalitis. Upon admission, prominent clinical features consisted of fever 38.3°C, coma, and rhombencephalitis; his other vital signs and the remainder of the clinical examination were unremarkable. The serum creatinine and urea nitrogen levels were normal.