text: Results
  primary pancreatic sarcomas are extremely rare. Pancreatic sarcomas are more aggressive than other pancreatic neoplasms.
  
entities: ['pancreatic sarcomas']
entities: Pathological_formation
entities: PMC-3168409-sec-03_T1
entities: ['Pancreatic sarcomas']
entities: Pathological_formation
entities: PMC-3168409-sec-03_T2
entities: ['pancreatic neoplasms']
entities: Pathological_formation
entities: PMC-3168409-sec-03_T3