Anatomy of a Tumor

Every breast cancer is a little different, but many follow a fairly standard course. How each is treated depends on how early it is discovered, how aggressively it is spreading and how it responds to antihormone treatments and other drugs


Normal The cells lining the duct are orderly and well differentiated

Hyperplasia A few extra cells accumulate

Atypical ductal hyperplasia The cells start looking more and more abnormal

STAGE 0 DCIS with Microcalcifications

--THE DEFINITION Cells that look like cancer but have not invaded surrounding tissue are called ductal carcinoma in situ (cancer confined to the duct). The lesions may...

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