Annals of Surgical Oncology

, Volume 19, Issue 11, pp 3416–3421

Axillary Node Staging for Microinvasive Breast Cancer: Is It Justified?

  • John M. LyonsIII
  • Michelle Stempel
  • Kimberly J. Van Zee
  • Hiram S. CodyIII
Breast Oncology

Abstract

Background

The natural history and role of axillary staging in microinvasive breast cancer (DCISM) remains controversial. We report clinical characteristics and outcome in patients with DCISM, focusing on the role of sentinel lymph node (SLN) biopsy.

Methods

From our prospective database we retrospectively identified 112 patients with DCISM who underwent SLN biopsy between 1996 and 2004 at our institution. Median follow-up was 6 years.

Results

We found positive SLN in 12 % of patients (14 of 112): macrometastasis in 2.7 % (3 of 112) and micrometastases or isolated tumor cells (ITC) in 10 % (11 of 112). We performed axillary dissection (ALND) in all patients with macrometastasis (3 of 3), finding additional positive nodes in 66 % (2 of 3), and in 27 % of those with micrometastases/ITCs (3 of 11), finding no additional positive nodes. Among 98 patients with negative SLN (38 % of whom received systemic therapy), there were 5 locoregional recurrences (1 in the ipsilateral axilla, 4 in the ipsilateral breast, all DCIS) and 4 contralateral second primary cancers. Among 14 patients with positive SLN (82 % of whom received systemic adjuvant therapy), there were no locoregional or distant recurrences.

Conclusions

Our results suggest that SLN biopsy may be justified for DCISM, but is clearly most beneficial to identify a very small subset of DCISM patients (2.7 %, with SLN macrometastasis) who could benefit from systemic adjuvant therapy. The benefit of SLN biopsy for patients with SLN micrometastases/ITCs (pN0mi or pN0(i+)) is uncertain, and in these cases ALND does not appear to be warranted. We suggest a wider reappraisal of routine SLN biopsy for DCISM.

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Copyright information

© Society of Surgical Oncology 2012

Authors and Affiliations

  • John M. LyonsIII
    • 1
  • Michelle Stempel
    • 1
  • Kimberly J. Van Zee
    • 1
  • Hiram S. CodyIII
    • 1
  1. 1.Department of SurgeryMemorial Sloan-Kettering Cancer CenterNew YorkUSA

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