 The investigators main objective is to test at the Mans, in situation of cancer of the pancreas any confused stages, the degree of prédictivité of the chimiokine MCP1 towards the syndrome of anorexia-cachexie associated with the cancer. The investigator also suggest describing: i the link between rate plasmatique of MCP1 and energy metabolism on one hand, physical composition on the other hand;; ii the impact of the other chimiokines, particularly those of the family of the MCPs, on the anorexia-cachexie bound to the cancer, iii the correlation enters their profile of expression plasmatique and the severity of the anorexia, the energy metabolism and the physical composition; iv the same research on the other inflammatory factors plasmatiques, of nature different from chimiokines; v the correlation between thin mass and anorexia; vi the evolution of the chimiokines various and inflammatory factors after surgical treatment or chemotherapy with curative aim in 6 months. 