NCIt definition : A usually slow-growing epithelial neoplasm with ductal differentiation that arises
from the exocrine pancreas and grows mostly within the pancreatic ducts. Grossly,
it is characterized by the presence of intraductal masses. Morphologically, there
is proliferation of mucin-producing cells within the pancreatic ducts, intraductal
accumulation of mucin, and a papillary growth pattern. It may be associated with the
presence of an invasive carcinoma. It usually occurs in older patients. Signs and
symptoms include epigastric pain, weight loss, jaundice, chronic pancreatitis, and
diabetes mellitus.;