Ugeskr Læger 2018;180:V04170317
Severe hypoglycaemia due to insulinoma after gastric bypass surgery
Postprandial hypoglycaemia with endogenous hyperinsulinaemia is relatively common after gastric bypass (GB) surgery. However, alternative aetiologies of hypoglycaemia should be kept in mind. We report a case of severe hypoglycaemia in a patient who had previously undergone GB surgery for morbid obesity. Hypoglycaemic episodes differed from typical GB-related hypoglycaemia by occurring during fasting periods. Examination revealed insulinoma, and nine months after resection the patient remained symptom free.