[Life-threatening malnutrition after a laparoscopic gastric bypass operation reverting the gastrointestinal tract into normal anatomy].

We present a case report of a woman who had repeating episodes of severe life-threatening malnutrition four years after a laparoscopic gastric bypass operation for severe overweight. Despite several normal examinations her condition remained unstable. She was offered a laparoscopic operation reverting the stomach and small intestine into normal anatomy and it was performed without complications so the condition resolved. The malnutrition was probably caused by a mixture of an eating disorder and the effects of the operation influencing gut hormones. It is important to handle this category of patients in a competent multidisciplinary team.