Operation on pancreas (procedure)

• Operation on pancreas
• Pancreas operation

• Procedure on pancreas (procedure) and Role group (attribute) some (
      Method (attribute) some Surgical action (qualifier value) and
      Procedure site (attribute) some Pancreatic structure (body structure))

• Operation on retroperitoneum (procedure)
• Operative procedure on digestive organ (procedure)
• Procedure on pancreas (procedure)
• Operation on endocrine system (procedure)