The Expert Working Group ‘Right-Sided Lesions and Interval Cancers’ of the Colorectal Cancer (CRC) Screening Committee of the World Endoscopy Organization was initiated in 2012. The group’s focus has changed throughout the years and in 2021, under leadership of Matt Rutter and Jeffrey Lee, the title was changed to PCCRC & Quality in Colonoscopy.

Chairs:

Dr Matt Rutter (UK)

Dr Jeffrey K. Lee (USA)

The main goals of this working group are:

• To monitor interval CRC during screening and colonoscopy surveillance to facilitate benchmarking and comparison across studies and programs
• To propose a method to perform root cause analysis of interval cancers in order to identify modifiable factors
• To propose solutions to minimize the interval CRC rate
• To create a platform for collaboration across screening organizations, programs and facilitate worldleading research

Publications 2014

Under the leadership of Silvia Sanduleanu and Evelien Dekker, the Expert Working Group ‘Right-Sided Lesions and Interval Cancers’ has published the following manuscripts:

Definition and taxonomy of interval colorectal cancers: a proposal for standardising nomenclature: GUT, Sep 2014 10.1136/gutjnl-2014-307992.

View video

Monitoring postcolonoscopy colorectal cancers: dangerous crossroads? GUT, Dec 2014 gutjnl-2014-308908.

Publications 2015

Colorectal cancer: Strategies to minimize interval CRC in screening programmes. Dekker E, Sanduleanu S. Nat Rev Gastroenterol Hepatol. 2016, Jan;13(1):10-2. doi: 10.1038/nrgastro.2015.216.

Publications 2018

Rutter MD, Beintaris I, Valori R, Chiu HM, Corley D, Dekker E, Forsberg A, Freixas MC, Gore-Booth J, Huag U, Kaminski MF, Matsuda T, Meijer G, Morris E, Plumb A, Rabeneck L, Robertson D, Schoen R, Singh H, Tinmouth J, Young G, Sanduleanu S. The World Endoscopy Organization consensus statements on post-colonoscopy and post-imaging colorectal cancer: Recommendations on terminology, etiology, categorization, qualitative and quantitative review of cases Gastroenterology 2018