What staging system is utilized for renal cell carcinoma?

The staging system utilized for renal cell carcinoma is the TNM staging system, which stands for Tumor, Node, Metastasis. This system is widely used for various types of cancers, including renal cell carcinoma, as it provides a comprehensive framework for determining the extent of cancer in the body.

In the TNM system, the "T" category assesses the size and local extent of the tumor; "N" evaluates the involvement of regional lymph nodes; and "M" denotes whether there is distant metastasis. This structured approach allows healthcare providers to classify the cancer's progression, aids in treatment planning, and helps predict patient outcomes.

Other staging systems mentioned are not applicable to renal cell carcinoma. For example, FIGO staging is primarily used for gynecological cancers, and Duke staging is specific to colorectal cancers. CT scan staging is a diagnostic method rather than a formal staging system. Thus, TNM staging is specifically designed to address the complexities of renal cell carcinoma, making it the correct choice for this question.