[Classification of cancers for clinical use]

The clinical classification of cancers has become necessary along the past decades to optimize treatments according pronostic and to allow scientific exchanges among the medical oncology community. The TNM staging system, with the derivates classifications, and the use of pronostic models, is now universal and applied to almost all human neoplasms. Therefore, the classification of cancers is now become an evoluting instrument of long-term evaluation of neoplastic diseases as well as medical oncology practice.