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Study: Active Surveillance as Safe Option for Low-Risk DCIS

4/1/2026

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Summary

Story summary

A watch-and-wait approach may be effective for women with low-risk ductal carcinoma in situ (DCIS).
Researchers found similar invasive cancer rates between active surveillance and immediate surgery.
About 9% of the surgery group developed invasive cancer, versus 6% in the active surveillance group.
The findings were presented at the European Breast Cancer Conference in Barcelona and are preliminary until published in a peer-reviewed journal.

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Story summary

A watch-and-wait approach may be effective for women with low-risk ductal carcinoma in situ (DCIS).
Researchers found similar invasive cancer rates between active surveillance and immediate surgery.
About 9% of the surgery group developed invasive cancer, versus 6% in the active surveillance group.
The findings were presented at the European Breast Cancer Conference in Barcelona and are preliminary until published in a peer-reviewed journal.