Final answer:
Tumor "grading" refers to the degree of differentiation, which assesses how well cancer cells resemble normal cells. Higher grades indicate poorly differentiated cancer cells.
Step-by-step explanation:
Tumor "grading" refers to the degree of differentiation, which is a property of cancer cells. It assesses how well the cancer cells resemble normal cells in terms of structure and function. Higher grades indicate poorly differentiated cancer cells, while lower grades indicate well-differentiated cancer cells. Tumor grading is different from tumor staging, which refers to the extent of the disease, lymph node involvement, and the presence of metastases. Example: A low-grade tumor would have well-differentiated cancer cells that closely resemble normal cells, while a high-grade tumor would have poorly differentiated cancer cells that do not resemble normal cells.