患者,女,54岁.因体检发现肾肿物一月,无自觉症状.B超所见:右肾中极见一个3.5×3.0厘米低回声区,向肾窦内突,其回声与肾实质回声相似,其间无明显界限,肾外形轮廓未见改变.彩超显示其内见散在动脉血流信号.B超提示:右肾中份实性低回声,肾柱肥大可能性大.手术所见;在肾中份皮质处见一个3.0×3.0厘米的肿物,质稍硬,边界较光滑.病理诊断,肾透明细胞癌. Patient, female, 54 years old. Kidney mass was found on physical examination in January, no subjective symptoms. B ultrasound findings: a 3.5×3.0 cm hypoechoic area in the right kidney, protruding to the renal sinus, its echo and renal parenchyma Echoes are similar, there is no obvious boundary, no change in the contour of the kidney. Color Doppler shows the signal of blood flow scattered within the artery. B-ultrasound: The right kidney has a solid hypoechoic, renal column hypertrophy is likely. Seeing surgery; A 3.0 x 3.0 cm mass was seen in the nephridial cortex. The mass was slightly stiff and the border was smooth. Pathological diagnosis, renal clear cell carcinoma.