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Practical Gastrointestinal Pathology pp 339–366Cite as

Non-syndromic Epithelial Polyps of the Gastrointestinal Tract

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Part of the book series: Practical Anatomic Pathology ((PAP))

Abstract

Clinical and histological findings of non-syndromic epithelial polyps of the GI tract are reviewed in this chapter, focusing on key diagnostic features for esophageal squamous papilloma, glycogenic acanthosis, gastric hyperplastic and fundic gland polyps, subtypes of gastric adenoma including pyloric gland adenoma and oxyntic gland adenoma, gastritis/colitis cystica profunda/polyposa, and inflammatory polyp. Key morphological features and clinical significance are discussed for sessile serrated lesion with and without cytologic dysplasia, subtypes of colonic hyperplastic polyp, subtypes of adenomatous polyp, and high-grade dysplasia arising in an adenomatous polyp. Other topics discussed in this chapter include “pseudoinvasion” versus true invasion, key histologic features to be reported for an adenomatous polyp with invasive adenocarcinoma, and stratification of colonic polyps for risk of progression to adenocarcinoma, as well as surveillance recommendations.

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Authors and Affiliations

  1. University of California at Davis School of Medicine, Sacramento, CA, USA

    Dorina Gui & Kristin A. Olson

  2. University of California at Los Angeles David Geffen School of Medicine, Los Angeles, CA, USA

    Hanlin L. Wang

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  1. Dorina Gui
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  2. Hanlin L. Wang
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Correspondence to Dorina Gui .

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  1. University of California, Los Angeles, CA, USA

    Hanlin L. Wang

  2. Mayo Clinic, Rochester, MN, USA

    Zongming Eric Chen

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Gui, D., Wang, H.L., Olson, K.A. (2021). Non-syndromic Epithelial Polyps of the Gastrointestinal Tract. In: Wang, H.L., Chen, Z.E. (eds) Practical Gastrointestinal Pathology. Practical Anatomic Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-51268-2_14

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