Breast Cancer

20% of mammogram-detected cancers are in situ lesions of unknown aggressiveness

Published in Women's Health Weekly, November 14th, 2002

Of cancers detected by screening mammography, approximately 20% are ductal carcinoma in situ (DCIS), a noninvasive tumor contained within the walls of the breast duct, according to a multistate study led by University of California San Francisco (UCSF) researchers.

The researchers found that the likelihood of DCIS diagnosis increases with age and, overall, 1 in every 1300 screening mammograms results in a diagnosis of DCIS.

"More research is needed to understand the biology of DCIS to help us identify which disease is likely to progress to invasive cancer, and also to better tailor treatment," said Karla Kerlikowske, MD, UCSF associate professor of...

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Source: Women's Health Weekly (2002-11-14)

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