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The diagnostic value of ultrasound and shear wave elastography in the differentiation of benign and malignant soft tissue tumors

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Abstract

Aim

To evaluate the diagnostic value of ultrasound (US) and shear wave elastography (SWE) in the differentiation of benign and malignant soft tissue tumors.

Materials and methods

A hundred and nine patients (mean age 43.3 ± 20.5, range 0–85; 64 men and 45 women) diagnosed with soft tissue tumors between August 2016 and January 2020 were evaluated with US and SWE. The stiffness of the lesions was measured as mean and maximum shear wave velocity (SWVmean and SWVmax) in meters/second (m/s). Two radiologists evaluated the US images independently and then reached a final consensus. Final diagnosis was obtained either by histopathological examination (core needle biopsy or surgery) or by follow-up. The diagnostic value of US and SWE in the differentiation of malignant and benign lesions was assessed.

Results

Pathology results revealed 37 malignant and 43 benign lesions. Twenty-nine lesions were benign based on follow-up criteria. Consensus US reading revealed 91.9% sensitivity and 72.2% specificity with almost perfect inter-observer agreement (κ = 0.802). Larger lesion size, male gender, advanced patient age, deep location, hypoechoic and hypervascular appearance, ill-defined margins, and presence of cystic area were associated with malignant diagnosis (p < 0.001, p = 0.010, p = 0.001, p = 0.001, p = 0.003, p < 0.001, p = 0.001, and p = 0.011, respectively). Median SWVmean and median SWVmax of malignant lesions (2.87 and 2.68) were not significantly different than those of the benign lesions (3.30 and 3.05; p = 0.271 and p = 0.402, respectively).

Conclusion

US features can differentiate malignant and benign soft tissue tumors, whereas SWE did not contribute to the differentiation of soft tissue tumors.

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Authors and Affiliations

  1. Department of Radiology, Ondokuz Mayis University Faculty of Medicine, Samsun, Turkey

    Mesut Ozturk, Mustafa Bekir Selcuk, Ahmet Veysel Polat & Aysu Basak Ozbalci

  2. Department of Pathology, Ondokuz Mayis University Faculty of Medicine, Samsun, Turkey

    Yakup Sancar Baris

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  1. Mesut Ozturk
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  2. Mustafa Bekir Selcuk
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  3. Ahmet Veysel Polat
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  4. Aysu Basak Ozbalci
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Correspondence to Mesut Ozturk.

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Ozturk, M., Selcuk, M.B., Polat, A.V. et al. The diagnostic value of ultrasound and shear wave elastography in the differentiation of benign and malignant soft tissue tumors. Skeletal Radiol 49, 1795–1805 (2020). https://doi.org/10.1007/s00256-020-03492-y

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  • DOI: https://doi.org/10.1007/s00256-020-03492-y

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