Dear Dr ………………………………..

Your patient …………………………………………DOB ………/….………/………….

is under treatment in the Colorectal Unit. In due course of his/her treatment will require Surgical Intervention needing Left sided colonic anastomosis.

We are currently conducting a research study to check anastomotic integrity. Your patient has consented to participate in the research study and will be randomised between the 2 groups.

Group 1. Direct visualisation of anastomosis with Narrow Band Imaging colonoscopy

Group 2. Standard anastomosis and usual routine assessment with Intra operative Air leak test and confirming completeness of the 2 doughnuts.

To ensure blinding of the study we will not reveal the treatment arm. However, if you have any concerns at all about your patient in regard to this surgical intervention, or you have any specific queries relating to this study please contact one of the research team at Hospital.

Yours sincerely

Research Team