TNM Classification of Malignant Tumours, 7 th Edition provides the latest, internationally agreed–uponstandards to describe and categorize cancer stages and progression.Published in affiliation with the International Union AgainstCancer (UICC), this authoritative guide contains important updatedorgan–specific classifications that oncologists and otherprofessionals who manage patients with cancer need to accuratelyclassify tumours for staging, prognosis and treatment. The major alterations addressed in the 7 th Edition concern carcinomas of the oesophagus and thegastroesophageal junction, stomach, lung, appendix, biliary tract,skin, and prostate. In addition, there are several entirely newclassifications: gastrointestinal carcinoids (neuroendocrine tumours) gastrointestinal stromal tumour upper aerodigestive mucosal melanoma Merkel cell carcinoma uterine sarcomas intrahepatic cholangiocarcinoma adrenal cortical carcinoma. A new approach has also been adopted to separate anatomicalstage groupings from prognostic groupings in which other prognosticfactors are added to T, N, and M categories. These new prognosticgroupings, as well as the traditional anatomical groupings, arepresented for oesophageal and prostate carcinomas.