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Molecular Pathology of Precursor Lesions of Pancreatic Cancer

  • Georg Feldmann
  • Anirban Maitra

Abstract:

It has become evident over the past decade that pancreatic ductal adenocarcinoma (a.k.a. pancreatic cancer) does not originate de novo, but rather, through a multistep progression that involves histologically defined precursor lesions. Three major subtypes of precursor lesions of pancreatic cancer have been identified to date, including pancreatic intraepithelial neoplasia (PanIN), intraductal papillary mucinous neoplasm (IPMN) and mucinous cystic neoplasm (MCN). PanINs constitute by far the most common precursor lesions, and are, by definition, microscopic in nature, while IPMNs and MCNs occur less frequently and are macroscopic (i.e., radiologically detectable) precursor lesions. In addition to the development of consensus histopathological criteria for the identification and classification of pancreatic cancer precursors, there has also been considerable progress made in characterizing the genetic abnormalities underlying these lesions. Elucidating the molecular pathology of precursor lesions has enabled a better understanding of the pathogenesis of early pancreatic neoplasia, and provided a seedbed for developing tools for early detection and chemoprevention of pancreatic cancer prior to onset of invasion. Histopathology, molecular genetics as well as clinical implications and possible directions for future research of PanINs, IPMNs and MCNs will be discussed in this chapter.

Keywords

Pancreatic Cancer Intraductal Papillary Mucinous Neoplasm Precursor Lesion Mucinous Cystic Neoplasm Prostate Stem Cell Antigen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Georg Feldmann
    • 1
  • Anirban Maitra
    • 1
  1. 1.Johns Hopkins University School of MedicineBaltimoreUSA

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