How different are the cancer cells from normal cells?

The pathologist will look at the tumor under a microscope to compare the appearance of the cancer cells to the normal cells nearby. How similar or different the cancer cells are relative to normal cells is called the grade of the tumor. Grade 1 cancers look similar to normal cells and grow the slowest. Grade 3 cancers look more disorganized and irregular than normal cells and grow the fastest. But even though Grade 3 cancers can act more aggressively, they are more easily killed off by chemotherapy and radiation.


How big is the cancer?

Is there lymph node involvement?

What is the cancer’s hormone receptor status?

What is the cancer’s HER2 status?

Additional tests

New laboratory tests


Treatment & Stages

Coping and support

Related Topics

Benign breast conditions

General breast cancer terms

Types of breast cancer in men








Oncologists, Breast Surgeons are the specialists who deal with the breast cancer