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Related Experiment Video

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Lymph node hypoplasia is associated with adverse outcomes in node-negative colon cancer using advanced lymph node

Patrick Mayr1, Georg Aumann2, Tina Schaller1

  • 1Institute of Pathology, Zentralklinikum Augsburg, Stenglinstrasse 2, 86156, Augsburg, Germany.

Langenbeck'S Archives of Surgery
|February 17, 2016
PubMed
Summary

In node-negative colon cancer, a low count of intermediate/large lymph nodes (LN5) is linked to worse survival. This finding suggests LN5 count could guide treatment decisions for colon cancer patients.

Keywords:
Colon cancerHyperplasiaHypoplasiaLymph node sizeStage migration

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Area of Science:

  • Oncology
  • Surgical Pathology

Background:

  • Lymph node size is an understudied prognostic factor in colon cancer.
  • Emerging evidence suggests lymph node size may be more critical than lymph node count for prognosis.

Purpose of the Study:

  • To investigate the prognostic value of lymph node size, specifically the count of intermediate/large lymph nodes (LN5), in node-negative colon cancer patients.
  • To determine if LN5 count impacts patient survival independently of other factors.

Main Methods:

  • Analysis of 115 node-negative colon cancer cases.
  • Classification of lymph nodes: small (≤5 mm diameter) and intermediate/large (LN5).
  • Grouping patients into "very low" (LN5vl, <2 LN5s) and "low/high" (LN5l/h, ≥2 LN5s) LN5 count categories.

Main Results:

  • Patients in the LN5vl group had significantly worse overall survival (34 months) compared to the LN5l/h group (40 months).
  • This survival difference remained significant after adjusting for tumor stage (pT1/2 vs. pT3/4).
  • Multivariate analysis identified LN5vl and T-stage as independent prognostic factors.

Conclusions:

  • The count of intermediate/large lymph nodes (LN5) is a significant prognostic marker in node-negative colon cancer, potentially reflecting immune response.
  • A low LN5 count is associated with poorer patient outcomes.
  • Patients with low LN5 counts may benefit from adjuvant chemotherapy.