A 10cm tumor corresponds to stage T2 based on the TNM staging system for tumors.
Here's a breakdown of the T stages based on tumor size, according to the provided reference:
- T1: Tumor is smaller than 5cm.
- T2: Tumor is larger than 5cm, but no larger than 10cm.
- T3: Tumor is larger than 10cm, but no larger than 15cm.
- T4: Tumor is larger than 15cm.
Therefore, a tumor measuring 10cm falls squarely within the T2 stage. It is important to note that the specific staging of a cancer will depend on many other factors (N - node involvement, M - metastasis) and will vary depending on the cancer type. The TNM staging system needs to be applied within the context of the specific cancer being staged.