TNM Staging System

Term	Definition
TNM Staging System	A system to describe the amount and spread of cancer in a patient’s body, using TNM. T describes the size of the tumor and any spread of cancer into nearby tissue; N describes spread of cancer to nearby lymph nodes; and M describes metastasis (spread of cancer to other parts of the body). This system was created and is updated by the American Joint Committee on Cancer (AJCC) and the International Union Against Cancer (UICC). The TNM staging, used in combination with tumor grade and prostate-specific antigen (PSA), is regarded as a well accepted practice standard for prostate cancer and is used as the basis for guiding treatment decision making.

Term

Definition

A system to describe the amount and spread of cancer in a patient’s body, using TNM. T describes the size of the tumor and any spread of cancer into nearby tissue; N describes spread of cancer to nearby lymph nodes; and M describes metastasis (spread of cancer to other parts of the body). This system was created and is updated by the American Joint Committee on Cancer (AJCC) and the International Union Against Cancer (UICC). The TNM staging, used in combination with tumor grade and prostate-specific antigen (PSA), is regarded as a well accepted practice standard for prostate cancer and is used as the basis for guiding treatment decision making.