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Related Experiment Video

Updated: May 29, 2026

Intraductal Delivery to the Rabbit Mammary Gland
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Can we know what to do when DCIS is diagnosed?

Melinda E Sanders1, Jean F Simpson

  • 1Department of Pathology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA.

Oncology (Williston Park, N.Y.)
|September 23, 2011
PubMed
Summary

Accurate diagnosis, size, grade, and margin assessment of ductal carcinoma in situ (DCIS) are crucial for effective treatment planning. Careful evaluation can identify patients suitable for excision alone, challenging traditional radiation protocols.

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Area of Science:

  • Oncology
  • Pathology
  • Breast Cancer Research

Background:

  • Ductal carcinoma in situ (DCIS) treatment decisions rely on histopathologic parameters.
  • Current options include excision alone, excision plus radiation, and mastectomy.
  • Optimizing DCIS management requires accurate diagnostic criteria and outcome-based data.

Purpose of the Study:

  • To outline a rational therapeutic plan for DCIS based on routine histopathologic findings.
  • To emphasize the importance of accurate diagnosis, size, grade, and margin evaluation in DCIS treatment.
  • To identify patient subsets who may not require postoperative radiation after breast conservation.

Main Methods:

  • Analysis of routine histopathologic parameters from lumpectomy and mastectomy specimens.
  • Evaluation of DCIS size, nuclear grade, presence of necrosis, and margin status.
  • Review of epidemiologic and outcome-based data to inform treatment decisions.

Main Results:

  • Accurate DCIS grading, particularly high nuclear grade and necrosis, predicts margin status and local recurrence risk.
  • Margin status is the most critical factor for local control in breast-conserving therapy for DCIS.
  • A subset of patients with DCIS can be successfully treated with excision alone, without radiation.

Conclusions:

  • Histopathologic parameters are essential for devising individualized DCIS treatment strategies.
  • Careful margin assessment is paramount for successful breast conservation.
  • The decision to use postoperative radiation for DCIS should be individualized, not universally applied.