CASE REPORT
A 71-year-old man was taken to our hospital because of disordered consciousness. His conscious level was E4V1M5 with Glasgow Coma Scale on admission. His blood pressure was 209/124mmHg, but there was no abnormality in both laboratory testing and cerebrospinal fluid examination. The MRI finding reveals a high-intensity area at the pons with FLAIR Imaging and ADC map (Fig. 1A and 1B ), but isointensity of DWI and no evidence of the blood flow interruption. Thus, the patient was diagnosed with PRES of the brainstem. Although his consciousness worsened on the following day to E2V1M5, it recovered on the 9th day with antihypertensive treatments. The patient was discharged on the 20th day without any sequelae.