[Autoimmune enteropathy in an adult patient]. / Enteropatía autoinmune en un paciente adulto.

Autoimmune enteropathy (AIE) is an infrequent cause of malabsorption that is usually associated with the presence of circulating autoantibodies and a predisposition to autoimmune disorders. This disease is more frequent in children. The diagnosis of this disorder is based on five criteria: chronic diarrhea (>6 weeks), malabsorption, specific histological findings, exclusion of similar disorders, and the presence of specific antibodies such as anti-enterocyte and anti-goblet cell antibodies. We present the case of a 63-year-old patient with chronic diarrhea, weight loss and significant deterioration of nutritional status.