A Macroscopic Sign of an Often Unseen Diagnosis

A 72 year old lady presented with new, non-bloody diarrhoea. She was intermittently using Ibuprofen and had a family history of colorectal cancer. She underwent colonoscopy.
What is the classical feature observed at the ceacum? How can the diagnosis be confirmed? How should this be treated?

 

Submitted by PR Harvey, RA Boulton.

Department of Gastroenterology, University Hospital Birmingham, Birmingham, UK.