preferred_name: Specimen from ampulla of Vater obtained by pylorus-sparing pancreaticoduodenectomy
preferred_name_lc: specimen from ampulla of vater obtained by pylorus-sparing pancreaticoduodenectomy
label: Specimen from ampulla of Vater obtained by pylorus-sparing pancreaticoduodenectomy
label_lc: specimen from ampulla of vater obtained by pylorus-sparing pancreaticoduodenectomy