Colon tumor
Juvenile (retention) polyp

Author: Jela Bandovic, M.D. (see Authors page)

Revised: 14 December 2016, last major update May 2012

Copyright: (c) 2003-2016,, Inc.

PubMed Search: Juvenile (retention) polyp colon

Cite this page: Juvenile (retention) polyp of colon. website. Accessed October 22nd, 2017.
Definition / general
Case reports
Gross description
  • Hamartomatous, large (1 - 3 cm) lesions with long (1 - 2 cm) stalks, red granular or glistening surface; may see cystic cavities
Gross images

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Prolapsing through rectum

Multiple polyps

Microscopic (histologic) description
  • Granulation tissue and ulcer covering abundant cystically dilated glands filled with mucus in an edematous and inflamed stroma
  • 20% have hyperplastic changes
  • Minimal epithelium or smooth muscle; no atypia
  • Rarely osseous metaplasia, foreign body giant cell reaction to ruptured glands
Microscopic (histologic) images

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Cystically dilated glands and inflammation

Differential diagnosis