A benign or malignant neoplasm involving the ampulla of Vater.
Synonyms:
exact_synonym:
ampulla of Vater tumor; ampulla of Vater tumour; hepatopancreatic ampulla neoplasm; hepatopancreatic ampulla neoplasm (disease); hepatopancreatic ampulla tumor; hepatopancreatic ampulla tumour; neoplasm of ampulla of Vater; neoplasm of hepatopancreatic ampulla; neoplasm of the ampulla of Vater; tumor of ampulla of Vater; tumor of hepatopancreatic ampulla; tumor of the ampulla of Vater; tumour of ampulla of Vater; tumour of hepatopancreatic ampulla; tumour of the ampulla of Vater