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- Title
Additional diagnostic value of shear-wave elastography and color Doppler US for evaluation of breast non-mass lesions detected at B-mode US.
- Authors
Choi, Ji; Han, Boo-Kyung; Ko, Eun; Shin, Jung; Kim, Ga; Choi, Ji Soo; Ko, Eun Young; Ko, Eun Sook; Shin, Jung Hee; Kim, Ga Ram
- Abstract
<bold>Objective: </bold>To evaluate the diagnostic value of shear-wave elastography (SWE) and colour Doppler ultrasound (US) for evaluation of breast non-mass lesions (NMLs) detected by B-mode US.<bold>Methods: </bold>This retrospective study enrolled 116 NMLs (42 benign, 74 malignant). For each lesion, B-mode US, SWE and colour Doppler US were performed. Mean elasticity (E mean), maximum elasticity (E max) and vascularity were assessed by SWE and Doppler US. Diagnostic performances of B-mode US, SWE and Doppler US were calculated to differentiate benign and malignant NMLs.<bold>Results: </bold>In benign NMLs, average E mean and E max were lower, and low vascularity (no flow or only one vessel flow) was more frequent (P < 0.001). When BI-RADS category 4a NMLs were downgraded to category 3 with 'E mean of 85.1 kPa or less' and/or 'low vascularity', specificities increased (69.0-90.5 %; P < 0.001), without significant loss in sensitivities (97.3-100 %). When these 4a NMLs were downgraded by the combination of SWE and Doppler US, all downgraded NMLs (59.3 %, 19/32) were confirmed as benign.<bold>Conclusions: </bold>Addition of SWE and colour Doppler US to B-mode US improved diagnostic performances in differentiating benign and malignant NMLs. This study suggests that the combination of SWE and colour Doppler may help patients with BI-RADS category 4a NMLs avoid unnecessary biopsies.<bold>Key Points: </bold>• B-mode US features of malignant and benign NMLs may overlap. • SWE and colour Doppler provides useful information about breast NMLs. • SWE and colour Doppler may decrease unnecessary biopsies of breast NMLs.
- Subjects
BREAST cancer diagnosis; COLOR Doppler ultrasonography; ELASTOGRAPHY; SHEAR waves; AMERICAN women; BREAST biopsy; HEALTH
- Publication
European Radiology, 2016, Vol 26, Issue 10, p3542
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-015-4201-6