Erschienen in:
01.08.2011 | Breast
Sonoelastographic lesion stiffness: preoperative predictor of the presence of an invasive focus in nonpalpable DCIS diagnosed at US-guided needle biopsy
verfasst von:
Nariya Cho, Woo Kyung Moon, Jung Min Chang, Ann Yi, Hye Ryoung Koo, Jeong-Seon Park, In Ae Park
Erschienen in:
European Radiology
|
Ausgabe 8/2011
Einloggen, um Zugang zu erhalten
Abstract
Objectives
To retrospectively evaluate whether sonoelastographic evaluation could help predict the presence of an invasive focus in nonpalpable DCIS diagnosed at US-guided needle biopsy.
Methods
One hundred and three consecutive nonpalpable DCIS lesions diagnosed at US-guided needle biopsy were analyzed. To identify the preoperative factors associated with upgrade to invasive cancers on surgical histology, lesion size, B-mode US findings, elasticity score, biopsy variables, and histological variables were analyzed using univariate and multivariate logistic regression. Interobserver agreement for the elasticity score was evaluated using the multi-rater κ statistics.
Results
The overall upgrade rate was 23% (24 of 103). Elasticity score was found to be the only independent predictor of invasion. The upgrade rates according to the median elasticity score was 6.7% (1 of 15) for a score of 1, 20.6% (13 of 63) for a score of 2, and 40.0% (10 of 25) for a score of 3 (Odds ratio [OR] = 1; OR = 4.19, P = 0.207; OR = 12.32, P = 0.039, respectively). No association was found between other factors and the upgrade rate. The overall interobserver agreement for the elasticity score was moderate (κ = 0.587; P < .001).
Conclusions
Sonoelastographic lesion stiffness is an independent preoperative predictor of invasion in some patients with nonpalpable DCIS at US-guided needle biopsy.