Figure 1.

Ultrasound showing left renal tumor. A: Ultrasound revealed hypoechoic masses (arrow) with ill-defined border in the central region around renal sinus. B: Color doppler flow imaging of mass (arrow) indicated decreased blood flow signals. The tumor invaded renal pelvis inward and infiltrated vessel pedicle outward, and caused caliectasis. AO: abdominal aorta; LRA: left renal artery.

Wang et al. Diagnostic Pathology 2013 8:96   doi:10.1186/1746-1596-8-96
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