BACKGROUND Ampullary cancer is a relatively rare malignant tumor in the digestive system.Its incidence has increased in recent years.As for now,its biological characteristics have not been fully clarified.Recent studi...
To evaluate the prognostic value of site-specific metastases among patients with metastatic pancreatic carcinoma registered within the Surveillance, Epidemiology and End Results (SEER) database.METHODSSEER database (2...