Role for contrast-enhanced ultrasound in assessing complications after kidney transplant

Figure 8 Histologically-proven papillary carcinoma in a 57-year-old male patient with previous kidney transplantation and impaired renal function. A and B: On grayscale ultrasound (A) the lesion appeared as a hypoechoic cortical mass with absent vascular signal at color analysis (B); C: Contrast-enhanced ultrasound better assessed the solid nature of the mass by showing lower lesion vascularization as compared to normal graft parenchyma; D: The patient was referred to surgery without the need of performing computed tomography or magnetic resonance imaging.