IGF2 and pancreatic neuroendocrine tumor: A small percentage of patients (13.1%) however, present with paraneoplastic syndromes such as non-islet cell tumour hypoglycaemia [31] associated with extrinsic production of high-molecular weight insulin-like growth factor II (IGF-II) which spontaneously resolves after resection of the mass [17, 19, 24, 30–37].