目的　探讨囊性肾癌的声像图特征及其分型。方法　对 13例经手术和病理证实的囊性肾癌患者进行超声检查 ,并对其囊壁、分隔及壁上的实性结节进行研究。结果　囊性肾癌的超声特点为囊壁及分隔不规则增厚 ,部分患者囊壁上可见实性结节。依据囊性肾癌的发生机制和声像图表现 ,可将其分为 3型 :单房囊肿型、多房囊肿型、有壁结节的囊实型。结论　超声能对典型囊性肾癌作出正确诊断 ,但不典型者可误诊为良性肾囊肿。必要时应行超声引导下穿刺活检以明确诊断 Objective To investigate the sonographic features and classification of cystic renal cell carcinoma. Methods Thirteen patients with cystic renal cell carcinoma confirmed by surgery and pathology were examined by ultrasound, and the cystic wall, septal wall and solid nodules were studied. Results The cystic renal cell carcinoma was characterized by irregular wall and irregular thickening, and some patients showed solid nodules on the cystic wall. According to the occurrence of cystic renal cell carcinoma and sonography, it can be divided into 3 types: single cyst type, multiple cyst type, wall nodules of the capsule type. Conclusion Ultrasound can make the correct diagnosis of typical cystic renal cell carcinoma, but atypical cases may be misdiagnosed as benign renal cysts. When necessary, ultrasound guided biopsy should be done to confirm the diagnosis