Cancers and their staging
Cancers are characterized by an unregulated growth of cells, which ultimately spreads to other parts of the body, causing disruption of normal cellular processes, eventually leading to death. Staging of the cancer helps in classifying the cancer according to the size of the tumor. It also provides information on its spread and the extent of spread. Staging is done through methods such as TNM staging, where T stands for the size of the tumor, N refers to the number of nearby lymph nodes that have cancer presence and provides information on whether or not the tumor has metastasized to other locations in the body.