title: Surgeons as philatelists: collectors and classifiers. Part I: The problem in pancreatic cancer: staging.
mesh_terms: D013502:General Surgery / Q000379:methods; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging / Q000379:methods*; D010190:Pancreatic Neoplasms / Q000473:pathology*