[Surgical resection for pancreatic neoplasms in the past 20 years].

Over the last 20 years there has been substantial progress in histopathological and biological understanding of pancreatic tumours. This has allowed surgical removal to be planned according to the aggressiveness and natural history of the tumours with benign (cystoadenomas, insulinomas) or low grade tumours (borderline mucin producing tumours, cystic papillary tumours), the trend towards cost effective surgery (conservative pancreatectomy) may be linked to the neighbouring organs (spleen, stomach, duodenum) in an attempt to bring about more rapid functional recovery for the patient and an improvement in the quality of life. On the other hand, the drastic reduction in operative mortality, which is currently less than 5\% of cases following duodeno-pancreatectomy, has encouraged a more aggressive surgical technique in order to increase radical resectability for malignant tumours. Moreover, for highly malignant tumours such as ductal adenocarcinoma, the role of pancreatic resection for palliative purposes, in order to improve the quality of life with an acceptable operative risk, has been confirmed. It is foreseeable that as a result of a more accurate selection and grading of patients for surgery, there may in the future be improvements in survival even in those patients operated on for ductal adenocarcinoma. Until now, these patients have received no significant benefit from the undoubted progress achieved in diagnostic and operative techniques.