What staging system is predominantly used for lung cancer?

The correct answer is the TNM staging system, which is primarily used for lung cancer. The TNM system provides a standardized method for describing the extent of cancer spread. It assesses three key components: the size and extent of the primary Tumor (T), the involvement of regional lymph Nodes (N), and the presence of distant Métastasis (M).

In the context of lung cancer, the TNM classification helps oncologists determine the stage of the disease, which is critical for developing a treatment plan and predicting patient outcomes. For instance, a higher T category indicates larger or more invasive tumors, while different N and M classifications can indicate more widespread disease.

Other staging systems, such as FIGO, Breslow, and Ann Arbor, are designed for different types of cancers and do not apply to lung cancer. FIGO is primarily used for gynecological cancers, Breslow is specific for melanoma and assesses depth of tumor invasion, and Ann Arbor is used for lymphomas. Therefore, the TNM system is the most relevant and widely utilized staging system for lung cancer specifically.