Successful treatment of cap polyposis by avoidance of intraluminal trauma: Clues to pathogenesis

Tatsuo Oriuchi, Yoshitaka Kinouchi, Mitsuo Kimura, Nobuo Hiwatashi, Tomohiko Hayakawa, Hiromitsu Watanabe, Shinji Yamada, Tetsuro Nishihira, Syuichi Ohtsuki, Takayoshi Toyota

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


'Cap polyposis' is a rarely-encountered condition in which distinctive inflammatory polyps are located from the rectum to the distal descending colon. Microscopically, the polyps consist of elongated, tortuous, and distended crypts covered by a 'cap' of inflammatory granulation tissue. Although the pathogenesis is unknown, mucosal prolapse has been postulated to be an important etiological factor, given certain clinical and histological similarities. We describe two cases of cap polyposis with protein-losing enteropathy. One was treated successfully by avoidance of straining at defecation. Another resolved after double-barreled transverse colostomy. Both successful treatments support a causal link of polyposis to prolapse. (C) 2000 by Am. Coll. of Gastroenterology.

Original languageEnglish
Pages (from-to)2095-2098
Number of pages4
JournalAmerican Journal of Gastroenterology
Issue number8
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology


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