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Expression Analysis of Mammalian Linker-histone Subtypes
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Subtyping of IPMN.

Toru Furukawa1

  • 1Department of Histopathology, Tohoku University Graduate School of Medicine, Sendai, Japan. toru.furukawa@med.tohoku.ac.jp.

Methods in Molecular Biology (Clifton, N.J.)
|November 1, 2018
PubMed
Summary

This chapter details the classification of intraductal papillary mucinous neoplasms (IPMNs) into four subtypes: gastric, intestinal, pancreatobiliary, and oncocytic. It covers histomorphological criteria and immunohistochemical staining for accurate IPMN subtyping.

Area of Science:

  • Gastroenterology and Hepatology
  • Surgical Pathology

Background:

  • Intraductal papillary mucinous neoplasms (IPMNs) are cystic neoplasms of the pancreas characterized by mucin-filled dilated ducts.
  • These neoplasms exhibit diverse morphologies and varying grades of cellular atypia.
  • Accurate subtyping of IPMNs is crucial for patient management and prognosis.

Purpose of the Study:

  • To describe the histomorphological criteria for subtyping IPMNs.
  • To outline the techniques for immunohistochemical staining against mucin proteins.
  • To provide guidance on evaluating immunohistochemical results for IPMN classification.

Main Methods:

  • Histopathological examination of IPMN tissue samples.
  • Application of immunohistochemical staining targeting specific mucin proteins.
Keywords:
GastricIntestinalMUC1MUC2MUC5ACMUC6OncocyticPancreatobiliary

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  • Morphological assessment and grading of cellular atypia.

    • Main Results:

    • IPMNs can be reliably classified into four distinct subtypes: gastric, intestinal, pancreatobiliary, and oncocytic.
    • Distinct histomorphological features characterize each subtype.
    • Immunohistochemical reactions aid in differentiating between subtypes.

    Conclusions:

    • Histomorphology and immunohistochemistry are essential tools for IPMN subtyping.
    • Accurate subtyping based on these criteria facilitates appropriate clinical decision-making.
    • This chapter provides a comprehensive guide for pathologists and clinicians involved in IPMN diagnosis.