Colorectal carcinoma: Proposal for a new M1 subclassification

Susanne Merkel, Klaus Weber, Roland Croner, Henriette Golcher, Jonas Göhl, Abbas Agaimy, Sabine Semrau, Jürgen Siebler, Axel Wein, Werner Hohenberger & Christian Wittekind
Background: In 2010, the seventh edition of the TNM cancer staging system of the UICC and the AJCC introduced a subdivision of M1 in the TNM classification of colorectal carcinomas. For the eighth TNM edition which will be released in the autumn of 2016 and will become effective in January 2017 new [for full text, please go to the a.m. URL]
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