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Fig. 5 | BMC Nephrology

Fig. 5

From: Diagnostic accuracy of contrast-enhanced ultrasound for characterization of kidney lesions in patients with and without chronic kidney disease

Fig. 5

Upstaging of cystic lesion on contrast-enhanced CT and CEUS due to greater contrast resolution. On the contrast-enhanced CT of a 44-year old patient with advanced kidney disease and kidney transplant, wall thickening is present (arrow). ROI shows no enhancement: the same Hounsfield unit measurements were seen pre- (5a, 35HU) and post-contrast (5b, 37.5 HU). This was read by one radiologist as Bosniak II and the other as Bosniak III. On CEUS (5c), the thickened wall is irregular and clearly enhances. Both readers read the lesion (circled) one stage higher as Bosniak III and IV on CEUS. This illustrates that CEUS has greater contrast resolution than CT, and may explain why applying the Bosniak criteria to CEUS leads to upstaging

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BMC Nephrology

ISSN: 1471-2369

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