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Open Access

PB.45. Correlation of perilesional tissue stiffness measured by ultrasound strain elastography with breast density

  • A Di Batista1,
  • R English2,
  • R Sidebottom2,
  • R Adams2,
  • L Winter2,
  • A Noble1 and
  • A Harris1
Breast Cancer Research201416(Suppl 1):P51

https://doi.org/10.1186/bcr3742

Published: 3 November 2014

Keywords

Early Breast CancerBreast DensityBreast MasseAssessment ModalityBreast Radiologist

Introduction

Over an 11-month period a series of patients with screen-detected breast masses were recruited with ethical approval into a BRC-funded study designed to evaluate the use of ultrasound elastography in the sizing of early breast cancer. We present results and imaging examples from 71 patients in whom BIRADS evaluation of breast density is correlated with elastography findings of the perilesional tissue.

Methods

Ultrasound elastography was performed in addition to the standard assessment modalities using a Zonare z.one US unit. Elastography data were post processed and were classified in terms of the strain characteristics of the perilesional tissue into stiff or not stiff. Standard mammogram projections were evaluated by two experienced breast radiologists (RE and RA) for breast density using the BIRADS system of classification. Intraobserver (RE) and interobserver (RE, RA) consistency was evaluated. Histological diagnosis subsequently demonstrated invasive disease in 55 patients and noninvasive in 16 patients.

Results

Intraobserver and interobserver consistency was 83% and 82% respectively. There was no case exceeding one category of difference. No correlation was demonstrated between perilesional tissue characteristics and background breast density. Sixty-two cases were classified as BIRADS 1 and 2, of whom 38 had perilesional stroma measures as stiff and 24 as not stiff. Nine cases were classified as BIRADS 3 or 4, of whom five had perilesional stroma measures as stiff and four as not stiff.

Conclusion

These results suggest that perilesional tissue stiffness is not closely related to the underlying breast density.

Authors’ Affiliations

(1)
Oxford University, Oxford, UK
(2)
Oxford University Hospitals NHS Trust, Oxford, UK

Copyright

© Batista et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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