Abstract
To assess the elastographic features of triple-negative breast cancers and evaluate the diagnostic value of acoustic radiation force impulse imaging (ARFI) for the characterization of triple-negative breast cancers. This study analyzed data from 234 women with breast cancer. Patients were categorized into three groups; 1) triple-negative breast cancers (n = 48); 2) ER-positive tumors (n = 128) and 3) HER2-positive tumors (n = 58). Mean tumor stiffness was evaluated by virtual touch tissue imaging (VTI) and virtual touch tissue quantification (VTQ) and quantified as both qualitative scores (1-5) and shear wave velocity (SWV) (m/s). The relationship between mean SWV and tumor parameters, including tumor size, tumor type, histologic grade and lymph node status, were investigated using multiple linear regression. Triple-negative tumor were more likely to have a large invasive size (p = 0.002), high histological grade (p < 0.001), lymph node involvement (p = 0.022) and strong ki-67 expression (p < 0.001). The highest mean SWV value were recorded in triple-negative tumors (7.36 m/s±1.83), followed by HER2+ tumors (6.65 m/s±2.26) and ER+ tumors (6.60 m/s±2.35) (p = 0.122). Triple-negative tumors were also associated with increased sti...Continue Reading
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