Metastases of pancreatic adenocarcinoma: A systematic review of literature and a new functional concept

Pancreatic cancer, especially Pancreatic Adenocarcinoma, is still associated with a high mortality and morbidity for affected patients notwithstanding considerable progresses in diagnosis and both surgical pharmacological therapy. Despite metastases from colorectal, gastric and neuroendocrine primary tumor and their treatment are widely reported, the literature has been rarely investigated the impact of localization and numbers of pancreatic metastases. This study performed a systematic analysis of the most recent scientific literature on the natural history of Pancreatic Adenocarcinoma focusing attention on the role that the "M" parameter has on a possible prognostic stratification of these patients