To treat or not treat breast cancer? Biomarker test now helps patients and doctors make better decisions

Normal vs. abnormal cells in ductal carcinoma in situ

Normal vs. abnormal cells in Ductal Carcinoma In Situ.

CLEVELAND, Ohio — When Patricia Reef discovered she had an early form of breast cancer called Ductal Carcinoma In Situ, she found herself plagued with doubt. Should she treat her cancer with radiation, or simply watch and wait?

Reef is not alone in her dilemma.

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