A patient with <scp>Marchiafava–Bignami</scp> disease type A transported by ambulance with impaired consciousness and malnutrition was successfully treated after early diagnosis by <scp>MRI</scp>

Marchiafava–Bignami disease (MBD) is a very rare disorder characterized by demyelination and necrosis of the corpus callosum. A 53-year-old male was transported to emergency room with impaired consciousness. On his arrival, he quite emaciated. CT examination revealed no hemorrhagic lesions whereas MR images showed hyperintense areas throughout callosum, leading diagnosis MBD. His consciousness improved treatment, including parenteral thiamine administration. When examining patients because malnutrition, MBD should be taken in consideration incorporation head imaging into protocol enables early may improve prognosis.