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Fig. 5 | Insights into Imaging

Fig. 5

From: Active surveillance of small renal masses

Fig. 5

Indeterminate renal mass by CT in an 82-year-old patient. a Axial unenhanced and (b) enhanced CT showing a renal mass with attenuation greater than 20 HU in unenhanced CT that enhances less than 20 HU after contrast administration, considered indeterminate by CT (arrows). c Unenhanced and (d) contrast-enhanced ultrasound (US) of the same lesion clearly depicting enhancement of this lesion consistent with a solid renal tumor (arrows), thereby allowing an indeterminate CT renal mass to be reliably classified as a solid mass

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