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Ask an Expert: Ductal carcinoma in situ (DCIS)

Q. I've just been diagnosed with ductal carcinoma in situ (DCIS.) I've heard it described as "stage 0" breast cancer. What does that mean? How worried should I be?

Answer from the expert staff of breast cancer research at the Robert W. Franz Cancer Research Center at Providence Portland Medical Center:

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American Cancer Society

American Cancer Society‚Äôs home page with links to all types of cancer, symptoms, treatment options, statistics trials and ways to contribute.