Article Text

Download PDFPDF
Microscopic colitis occurring in association with hyperplastic polyps and tubulovillous adenomas: observations in 10 cases
  1. J D Coyne
  1. Correspondence to Dr J D Coyne, Department of Pathology, The Royal Oldham Hospital, Rochdale Road, Oldham 0L1 2JH, UK; johnnycoyne{at}

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Sir, Hyperplastic polyps and tubulovillous adenomas, as well as collagenous/lymphocytic colitis, are not infrequently encountered diagnoses in colonic biopsies. Although this finding is well known, and not in the least bit surprising, to gastrointestinal pathologists (reviewer personal communication), potential differing aspects of this have neither been explored nor documented for non-gastrointestinal pathologists. Herein, the features of 10 such cases are reported with an emphasis on differences between type of polyp and inflammatory/collagenous changes in microscopic colitis.

The 10 cases are summarised in table 1. All biopsies were stained with H&E and with Masson trichrome, CD3 and CD8. Seven of the 10 cases showed features typical of collagenous colitis in random colonic biopsies. Three …

View Full Text


  • Competing interests None.

  • Provenance and peer review Not commissioned; internally peer reviewed.