Abstract
Gastric polyps can be defined as luminal lesions projecting above the mucosal surface. Gastric polyps are detected in 2–3% of upper gastrointestinal endoscopies. Gastric polyps are generally divided into nonneoplastic and neoplastic types. About 80–90% of gastric polyps are nonneoplastic. Hyperplastic polyps, fundic gland polyps, inflammatory fibroid polyps, and hamartomatous polyps are nonneoplastic. Hyperplastic polyps may be sessile or pedunculated. Larger hyperplastic polyps may have small erosions or ulcerations on the surface. Fundic gland polyps appear usually as multiple, glassy, transparent, sessile polyps. Inflammatory fibroid polyps are well-circumscribed solitary, small sessile, or pedunculated lesions with regular pit pattern. Hamartomatous polyps are usually pedunculated, round polyps with hyperemic and exudative surfaces. Dysplastic epithelium is defined as noninvasive, neoplastic epithelium. Gastric adenomas are defined as circumscribed, polypoid dysplastic lesions. Flat tubular adenomas are also called dysplasias. Endoscopically, adenomas/dysplasias are reddish or whitish discolored, often with a multilobulated surface, contrasting with smooth and atrophic adjacent mucosa. The surface may be smooth or superficially eroded.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
The Paris endoscopic classification of superficial neoplastic lesions: esophagus, stomach, and colon: November 30 to December 1, 2002. Gastrointest Endosc. 2003;58:S3–43.
Oberhuber G, Stolte M. Gastric polyps: an update of their pathology and biological significance. Virchows Arch. 2000;437:581–90.
Park DY, Lauwers GY. Gastric polyps: classification and management. Arch Pathol Lab Med. 2008;132:633–40.
Goldstein NS, Lewin KJ. Gastric epithelial dysplasia and adenoma: historical review and histological criteria for grading. Hum Pathol. 1997;28:127–33.
Dixon MF. Gastrointestinal epithelial neoplasia: vienna revisited. Gut. 2002;51:130–1.
Lauwers GY, Srivastava A. Gastric preneoplastic lesions and epithelial dysplasia. Gastroenterol Clin N Am. 2007;36:813–29.
Yao K, Iwashita A, Tanabe H, et al. White opaque substance within superficial elevated gastric neoplasia as visualized by magnification endoscopy with narrow-band imaging: a new optical sign for differentiating between adenoma and carcinoma. Gastrointest Endosc. 2008;68:574–80.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Jang, J.Y. (2018). Gastric Polyps and Dysplasias. In: Chun, H., Yang, SK., Choi, MG. (eds) Clinical Gastrointestinal Endoscopy. Springer, Singapore. https://doi.org/10.1007/978-981-10-4995-8_10
Download citation
DOI: https://doi.org/10.1007/978-981-10-4995-8_10
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-4994-1
Online ISBN: 978-981-10-4995-8
eBook Packages: MedicineMedicine (R0)