Polypoid colonic hamartomatous inverted polyp

Shouichi Tanaka, Masaya Iwamuro, Junichi Kubota, Motohiro Goubaru, Takeyuki Ohta, Masatoshi Ogata, Ichiro Murakami

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We herein present a unique polyp diagnosed as polypoid colonic hamartomatous inverted polyp. Colonoscopic examination revealed a clover-like submucosal tumor about 30 mm in size with a long stalk at the mid-transverse colon. The polyp consisted of elongated crypts with cystic dilatation located in the submucosal layer. To the best of our knowledge, there have been no previous reports of the same type of pedunculated colonic polyp, similar in appearance to inflammatory myoglandular polyps but covered with a layer of normal mucosa possessing the muscularis mucosae at the uppermost surface of the polyp.

Original languageEnglish
Pages (from-to)40-42
Number of pages3
JournalDigestive Endoscopy
Issue number1
Publication statusPublished - Jan 2007
Externally publishedYes


  • Colon
  • Hamartomatous inverted polyp
  • Inflammatory myoglandular polyp
  • Localized colitis cystica profunda
  • Polypoid

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology


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