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Schwarze, V; Lindner, F.; Marschner, C.; de Figueiredo, G. Negrao; Ruebenthaler, J. and Clevert, D-A (2019): Single-center study: The diagnostic performance of contrast-enhanced ultrasound (CEUS) for assessing focal splenic lesions compared to CT and MRI. In: Clinical Hemorheology and Microcirculation, Vol. 73, No. 1: pp. 65-71

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Abstract

BACKGROUND: Frequently focal splenic lesions (FSL) - cysts, hemangioma, hamartoma, metastases or infarction amongst others - are incidentally found within the scope of the sonographic examination of the abdomen. By using native B-mode and Color Doppler the underlying entity often is not elucidated. Thus, more elaborate imaging modalities like CT and MRI scans with their associated risks are used to clarify the entity of FSL. PURPOSE: The aim of the present retrospective single-center study is to evaluate the diagnostic performance of CEUS examination for assessing splenic focal lesions by comparison with findings from CT and MRI scans. MATERIALS AND METHODS: Between 2010-2018 46 patients were included in the study. All patients underwent native B-mode, Color Doppler and CEUS after given informed consent. The applied contrast agent was a second-generation blood pool agent (SonoVue (R), Bracco, Milan, Italy). CEUS examinations were performed and interpreted by a single experienced radiologist (EFSUMB Level 3). RESULTS: All patients were examined without occurrence of any side effects. In total, 53 FSL were investigated (9% traumatic vs. 91% non-traumatic). Compared to CT, CEUS showed a sensitivity, specificity, PPV, NPV of 100% for assessing infarction, hematoma, hamartoma, cystic and malignant lesions. In comparison with MRI, CEUS presented a sensitivity, specificity, PPV, NPV of 100% for evaluating pseudolesions, hemangioma, hamartoma, cystic and malignant lesions. CONCLUSION: With an excellent safety profile CEUS shows an equipollent diagnostic performance for differentiating FSL compared to CT and MRI scans.

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