title: Precancerous conditions for pancreatic cancer.
abstract: Precancerous conditions for ductal adenocarcinoma of the pancreas in hamsters and human beings are discussed. In hamsters, ductal adenocarcinomas induced by nitrosamines are of nonmucin-hypersecreting tubular or papillary tumor types, and genetic alterations resembling these types are found in their human counterparts. Ductal lesions develop step-by-step from hyperplasias to carcinomas, and atypical ductal cell hyperplasias may be precancerous. In humans, ductal lesions, hyperplasias, or dysplasias, with or without mucin hypersecretion, are possible preneoplastic conditions. Genetic or phenotypic markers to determine their likelihood of progressing to pancreatic duct adenocarcinomas are a high priority for future research.
authors.affiliation: Department of Oncological Pathology, Cancer Center, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Tsutsumi
authors.forename: Y
authors.initials: Y
authors.lastname: Konishi
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000818:Animals; D006224:Cricetinae; D006965:Hyperplasia; D010183:Pancreatic Ducts / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000473:pathology*; D011230:Precancerous Conditions / Q000473:pathology*