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[CEUS-diagnostic workup of cystic renal lesions]
J Rübenthaler1, K Mueller-Peltzer2, G Negrão de Figueiredo2
1Klinik und Poliklinik für Radiologie, Interdisziplinäres Ultraschall-Zentrum, Universitätsklinikum, Ludwig-Maximilians-Universität München, Marchioninistr. 15, 81377, München, Deutschland. Johannes.Ruebenthaler@med.uni-muenchen.de.
Clinical/Methodical Issue:
Cystic renal lesions are common incidental findings in radiological imaging and they should be adequately examined to be able to characterize them as benign or malignant.
Standard Radiological Methods:
It is not always possible to sufficiently characterize cystic renal lesion solely using native B‑mode sonography and color-Doppler sonography.
Methodical Innovations:
Using contrast-enhanced ultrasound (CEUS), it is possible to dynamically evaluate the perfusion of cystic renal lesions and to characterize the potential malignancy of these lesions using the Bosniak classification in order to give recommendations regarding further work-up. CEUS can also be used in patients with contraindications for other radiological imaging modalities as it uses a contrast agent with almost no side effects.
Performance:
Using CEUS, cystic renal lesions can be reliably characterized with a diagnostic accuracy greater than 90%.
Achievements:
CEUS is a useful method in diagnosing and characterizing unclear cystic renal lesions and should always be considered as a viable diagnostic tool.
Practical Recommendations:
CEUS should always be performed in initially unclear cases and is a useful additional tool for the diagnosis and characterization of unclear cystic renal lesions.
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