The degree of extramural spread of T3 rectal cancer: a plea to the UICC and AJCC

The above article, published online on 15 July 2016 in Wiley Online Library ( wileyonlinelibrary.com ), has been retracted by agreement between the authors, the journal Editor‐in‐Chief, Neil Mortensen, and John Wiley & Sons Limited. After acceptance the authors were made aware of a contribution to a prior publication of the UICC, TNM Supplement: A commentary on uniform use, 4th Edition , ed. C. Wittekind (Wiley, 2012), p. 195, which renders the central argument of their article invalid. They have therefore asked for it to be withdrawn. A modified version of the paper was published in the January 2017 issue (volume 19; issue 1) with the title “The degree of extramural spread of T3 rectal cancer: an appeal to the American Joint Committee onCancer”.