Types and Stages of Breast Cancer

Breast cancer is categorised by how it looks under the microscope, as well as by what stage the cancer is at. By looking under a microscope, a pathologist can tell the type and grade of cancer cells and how quickly the cancer cells are growing. All of these factors help doctors to predict the probable outcome of the disease and act as a guide for what treatments they will recommend.

The two most common types of breast cancer are ductal (arising from the milk ducts) and lobular (arising from the milk lobules). Each type can be either invasive (cancers that have the ability to spread to other parts of the body) or in situ (ones that don't). Less common forms of breast cancer include inflammatory, medullary, mucinous, papillary, tubular, and Paget's disease.

In this section:

Types of breast cancers
In situ carcinoma and Ductal Carcinoma In Situ (DCIS). Read more>

Uncommon breast cancers

Other less common forms of breast cancer include: Inflammatory breast cancer (IBC), Mixed tumors, Medullary cancer. Read more>

Staging of breast cancer
Tumour size and spread and determining lymph node status. Read more>