Atezolizumab is a medication used to help the immune system attack cancer cells. It works by blocking a protein that stops the immune system from working properly, allowing it to better target and destroy cancer cells.

Pertuzumab is a medication that targets a specific protein on the surface of cancer cells. It helps to stop the growth and spread of cancer by blocking signals that tell the cancer cells to grow.

Trastuzumab is a medication used to treat certain types of breast cancer. It works by attaching to a protein on the surface of cancer cells, which helps to stop the cells from growing and dividing.

Chemotherapy involves the use of drugs to kill or slow the growth of cancer cells. It is often used in combination with other treatments to increase its effectiveness in treating cancer.

Invasive Breast Cancer – This is a type of breast cancer that has spread from the original site in the breast ducts or lobules into surrounding breast tissue. It can further progress by spreading to nearby lymph nodes and potentially to other parts of the body. The disease often begins as a lump or mass in the breast, which may be detected through physical examination or imaging tests. As it advances, symptoms can include changes in breast shape, skin dimpling, or nipple discharge. The progression of invasive breast cancer can vary, with some cases growing slowly while others may spread more rapidly. Understanding the specific characteristics of the cancer, such as hormone receptor status, is crucial in determining its behavior and potential progression.