Lung cancer is the most common malignancy in the United States. The prognosis of lung cancer depends on its stage. This application calculates the stage of the tumor according to the TNM classification, where T represents the characteristics of the primary tumor, N describes the presence or absence of spread to certain lymph nodes, and M details whether the tumor has spread to other structures in the body.

This application is meant for educational purposes only. Any medical treatments or decisions should be made after consultation with appropriate health care personnel.