TNM Classification of Malignant Tumours, 7^th Edition provides the latest, internationally agreed-upon standards to describe and categorize cancer stages and progression. Published in affiliation with the International Union Against Cancer (UICC), this authoritative guide contains important updated organ-specific classifications that oncologists and other professionals who manage patients with cancer need to accurately classify tumours for staging, prognosis and treatment.

The major alterations addressed in the 7^th Edition concern carcinomas of the oesophagus and the gastroesophageal junction, stomach, lung, appendix, biliary tract, skin, and prostate. In addition, there are several entirely new classifications:

• 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 anatomical stage groupings from prognostic groupings in which other prognostic factors are added to T, N, and M categories. These new prognostic groupings, as well as the traditional anatomical groupings, are presented for oesophageal and prostate carcinomas.