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研究表明,5％～10％的肾癌病例并发下腔静脉瘤栓。约50％的瘤栓位于下腔静脉的肝下段,40％伸入到肝内段,10％达到右房内。而术前利用影像学检查明确瘤栓的范围对外科治疗很有意义。在对431例此类病例的研究中发现,CT检测瘤栓的敏感度为79％;常规超声为68％;MRI与食管内超声一样为90％,但与后者相比,MRI具有创伤小,费用低且可纵向显示下腔静脉的优点。
Studies have shown that 5% to 10% of cases of renal cell carcinoma complicated with inferior vena cava suppository. Approximately 50% of the tumor plugs are located in the inferior hepatic segment of the IVC, 40% extend into the intrahepatic segment, and 10% reach the right atrium. The use of imaging before surgery to confirm the scope of tumor embolism is very meaningful for surgical treatment. In a study of 431 such cases, the sensitivity of CT in detecting tumor suppositories was 79%; conventional ultrasound was 68%; MRI was 90% identical to esophageal ultrasound, but compared with the latter, MRI had less trauma , Low cost and the advantages of longitudinal inferior vena cava display.