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Breast cancer stages, types and grades

The stage of a breast cancer tells you how big it is and whether it has spread. The type tells which type of cell the cancer started from and the grade means how abnormal the cells look under the microscope.

About breast cancer staging and grades

Find out about the different staging systems for breast cancer and about breast cancer grading and differentiation.

TNM staging

Find out about the tumour, node and metastasis (TNM) staging system for breast cancer.

Number stages of breast cancer

The number system for breast cancer staging divides cancers into 4 groups, from 1 to 4.

Types of breast cancer and related conditions

Read about the different types of breast cancer, including breast cancer in men, and conditions related to breast cancer.

Last reviewed: 
02 Oct 2017
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