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Published in: Annals of Surgical Oncology 4/2012

Open Access 01-04-2012 | Colorectal Cancer

High Lymph Node Yield is Related to Microsatellite Instability in Colon Cancer

Authors: E. J. Th. Belt, MD, E. A. te Velde, MD, PhD, O. Krijgsman, R. P. M. Brosens, MD, PhD, M. Tijssen, H. F. van Essen, H. B. A. C. Stockmann, MD, PhD, H. Bril, MD, PhD, B. Carvalho, PhD, B. Ylstra, PhD, H. J. Bonjer, MD, PhD, G. A. Meijer, MD, PhD

Published in: Annals of Surgical Oncology | Issue 4/2012

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Abstract

Background

Lymph node (LN) yield in colon cancer resection specimens is an important indicator of treatment quality and has especially in early-stage patients therapeutic implications. However, underlying disease mechanisms, such as microsatellite instability (MSI), may also influence LN yield, as MSI tumors are known to exhibit more prominent lymphocytic antitumor reactions. The aim of the present study was to investigate the association of LN yield, MSI status, and recurrence rate in colon cancer.

Methods

Clinicopathological data and tumor samples were collected from 332 stage II and III colon cancer patients. DNA was isolated and PCR-based MSI analysis performed. LN yield was defined as “high” when 10 or more LNs were retrieved and “low” in case of fewer than 10 LNs.

Results

Tumors with high LN yield were significantly associated with the MSI phenotype (high LN yield: 26.3% MSI tumors vs low LN yield: 15.1% MSI tumors; P = .01), mainly in stage III disease. Stage II patients with high LN yield had a lower recurrence rate compared with those with low LN yield. Patients with MSI tumors tended to develop fewer recurrences compared with those with MSS tumors, mainly in stage II disease.

Conclusions

In the present study, high LN yield was associated with MSI tumors, mainly in stage III patients. Besides adequate surgery and pathology, high LN yield is possibly a feature caused by biologic behavior of MSI tumors.
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Metadata
Title
High Lymph Node Yield is Related to Microsatellite Instability in Colon Cancer
Authors
E. J. Th. Belt, MD
E. A. te Velde, MD, PhD
O. Krijgsman
R. P. M. Brosens, MD, PhD
M. Tijssen
H. F. van Essen
H. B. A. C. Stockmann, MD, PhD
H. Bril, MD, PhD
B. Carvalho, PhD
B. Ylstra, PhD
H. J. Bonjer, MD, PhD
G. A. Meijer, MD, PhD
Publication date
01-04-2012
Publisher
Springer-Verlag
Published in
Annals of Surgical Oncology / Issue 4/2012
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-011-2091-7

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