Histological examination plays a vital role in grading and staging cancer. The grade of a cancer refers to how much the cancer cells resemble normal cells, which is an indicator of how quickly the cancer is likely to grow and spread. Low-grade cancers resemble normal cells and tend to grow slowly, while high-grade cancers look abnormal and grow rapidly. Staging involves determining the extent of cancer spread, and it often requires additional imaging studies and sometimes surgical exploration.
