Objective To evaluate contrast-enhanced ultrasound for diagnosis of small renal cell carcinoma.Methods The clinical data of 20 cases of pathologically confirmed with small renal cell carcinoma in our hospital from Jan.2007 to Jan.2011 were retrospectively analyzed,the detection rate of contrast enhanced ultrasound and CT for small renal cell carcinoma were compared.Results Among the 20 patients,contrast-enhanced ultrasound diagnosis in 18 cases(90%),CT scan diagnosis in 16 cases(80%).In the diagnosis of sma...