Conventional ultrasound scanning has a limited ability to accurately outline renal pathology and cannot be accurately differentiating between malignant and benign lesions. Contrast-enhanced ultrasound has many values: being safe, does not require the utilization of ionizing radiation, and is quick and costly reasonable. Moreover, it is our experience that contrast-enhanced ultrasound is an easy and simple procedure to master for the experienced ultrasound practitioner. In this article, we discuss the technique, indications and value of contrast-enhanced ultrasound in renal tumor imaging.