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Related Experiment Videos

Node retrieval in axillary lymph node dissections: recommendations for minimum numbers to be confident about node

J E A Somner1, J M J Dixon, J S J Thomas

  • 1Edinburgh University Medical School, Edinburgh EH8 9AG, UK.

Journal of Clinical Pathology
|July 29, 2004
PubMed
Summary
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For accurate axillary lymph node dissection (ALND) staging, recovering at least 16 lymph nodes is recommended. This target ensures high confidence in detecting metastases and improves staging accuracy for breast cancer patients.

Area of Science:

  • Oncology
  • Surgical Pathology
  • Breast Cancer Research

Background:

  • Axillary lymph node dissection (ALND) is crucial for staging breast cancer.
  • Accurate staging relies on adequate lymph node sampling.
  • Determining the optimal number of nodes for reliable assessment is essential.

Purpose of the Study:

  • To establish the minimum number of lymph nodes required in an ALND specimen.
  • To ensure a high level of confidence in ruling out axillary metastases.
  • To optimize the diagnostic yield of ALND specimens.

Main Methods:

  • Retrospective review of 609 consecutive ALND procedures.
  • Analysis of data from 520 patients with invasive breast cancer.
  • Correlation of lymph node yield with tumor characteristics and metastasis presence.

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Main Results:

  • 64% of patients exhibited axillary node metastases.
  • A mean of 17.9 lymph nodes were collected per specimen.
  • Specimens with 16 or more nodes showed a significantly higher metastasis detection rate (69.1%) compared to those with 1-15 nodes (58.5%).

Conclusions:

  • No strict minimum number of nodes is mandated for ALND.
  • 16 lymph nodes should be considered a target for reliable staging.
  • The rate of metastasis detection follows the law of diminishing returns with increasing node yield.