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BMC Cancer
Published in: BMC Cancer 1/2017

Open Access 01-12-2017 | Research article

An objective nodal staging system for breast cancer patients undergoing neoadjuvant systemic treatment

Authors: Tae-Kyung Yoo, Jung Min Chang, Hee-Chul Shin, Wonshik Han, Dong-Young Noh, Hyeong-Gon Moon

Published in: BMC Cancer | Issue 1/2017

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Abstract

Background

In this study, we aimed to develop an objective staging system to determine the degree of nodal metastasis in breast cancer patients undergoing neoadjuvant systemic treatment (NST).

Methods

We reviewed the pretreatment computed tomography (CT) images of 392 breast cancer patients who received NST. The association between the patterns of the enlarged regional lymph nodes and treatment outcome was analyzed.

Results

In the development cohort of 260 patients, 88 (33.8%) patients experienced tumor recurrence and had a significantly higher number of enlarged lymph nodes on the pretreatment CT compared to patients with no recurrence. When patients were classified according to the numbers and locations of enlarged lymph nodes on pretreatment CT, the number of lymph nodes larger than 1 cm was most significantly associated with tumor recurrence. The accuracy of the CT-based nodal staging system was validated in an independent cohort of 132 patients. The presence of the enlarged supraclavicular nodes was associated with worse outcome, but the effect seemed to originate from the accompanied extensive axillary nodal burden. The prognostic effect of the objectively measured axillary nodal metastasis was more pronounced in hormone receptor-negative tumors.

Conclusions

We have developed and validated an objective method of nodal staging in breast cancer patients who undergo NST based on the number of enlarged axillary lymph nodes. Our system can improve the current subjective approach, which uses physical examination alone.
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Metadata
Title
An objective nodal staging system for breast cancer patients undergoing neoadjuvant systemic treatment
Authors
Tae-Kyung Yoo
Jung Min Chang
Hee-Chul Shin
Wonshik Han
Dong-Young Noh
Hyeong-Gon Moon
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2017
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-017-3380-8

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