Patients with lung cancer may have specific treatment based on their tumor,node,and metastasis (TNM)characteristics.An example of a true statement about the TNM system is:

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Staging is based on TNM findings.According to the TNM system,lung cancer has the following three stages: Stage I disease includes tumors classified as T₁ with or without metastasis to the lymph node in the ipsilateral hilar region.Stage II disease includes those tumors classified as T₂,with metastasis only to the ipsilateral hilar lymph nodes.Stage III includes all tumors more extensive than T₂ or any tumor with metastasis to the lymph nodes in the mediastinum with distant metastasis.

Patients with Lung Cancer May Have Specific Treatment Based on Their