Tumours that earlier were called carsinoids are according to the new WHO classification called neuroendocrine (NE) tumours. The WHO 2010 classification does not take stand on the malignancy of the tumour. About 2% of cancers of the gastrointestinal tract and pancreas are neuroendocrine tumours. Most commonly located in the caecum Incidence Gastrointestinal tract 8.4/100 000 Pancreas 1/100 000 (insulinoma 0.5/100 000, gastrinoma 0.05/100 000, vipoma 1/10 million)