The TNM Classification is a system used by medical professionals to describe the extent of cancer in a patient's body. It stands for Tumor, Node, and Metastasis. The "T" indicates the size and extent of the primary tumor, the "N" refers to whether cancer has spread to nearby lymph nodes, and the "M" shows whether there are distant metastases, meaning the cancer has spread to other parts of the body. This classification helps doctors determine the stage of cancer, which is crucial for planning treatment and predicting outcomes. By using the TNM system, healthcare providers can communicate more effectively about a patient's condition and tailor treatment strategies accordingly.