Pedunculated tubulovillous adenoma

Case contributed by Matt A. Morgan
Diagnosis almost certain

Presentation

Screening double contrast barium enema

Patient Data

Age: 60 years
Gender: Male

Double contrast barium enema

Fluoroscopy
Download
Info

On this magnified image, there is a pedunculated polyp arising from the colonic mucosa.

Thanks to Steve Rubesin, MD for this case.

Case Discussion

This case shows a pedunculated colonic polyp on double contrast barium enema.

Colon cancer follows an accepted adenoma/dysplasia --> carcinoma progression. Three types of adenomas are recognized in the colonic polyps:

  • tubular: (~80%)

  • villous: (~5-15%)

  • tubulovillous: (~5-15%) - 25-75% villous component

In this case, the polyp had tubulovillous histology. These polyps (and polyps >10 mm in size generally) are considered "advanced adenomas" and are at higher risk for developing colonic adenocarcinoma.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

:

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.