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Efficacy of Transhepatic Radiofrequency Ablation of Renal Cell Carcinoma

John P. McGahan1, Kyung Mee Ro1, Christopher P. Evans1 and Lars M. Ellison1

1 All authors: Department of Radiology, University of California, Davis, Medical Center, 4860 Y St., Suite 3100, Sacramento, CA 95817.


Figure 1
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  		Fig. 1A —Radiofrequency ablation of right renal mass in 86-year-old man (patient 2). Real-time sonogram shows renal mass marked by electronic calipers in upper pole of right kidney (RK). 1 = first diameter, 2 = second diameter.

 

Figure 2
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  		Fig. 1B —Radiofrequency ablation of right renal mass in 86-year-old man (patient 2). Color Doppler sonogram shows that few large vessels surround mass (M). Vessels are more central in kidney (arrow).

 

Figure 3
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  		Fig. 1C —Radiofrequency ablation of right renal mass in 86-year-old man (patient 2). Needle (straight arrow) has been placed transhepatically into renal mass (curved arrow), which appears echogenic during radiofrequency ablation treatment. RT = right.

 

Figure 4
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  		Fig. 1D —Radiofrequency ablation of right renal mass in 86-year-old man (patient 2). CT scan obtained after radiofrequency ablation shows avascular renal mass (arrow) and left kidney with renal cyst (C).

 

Figure 5
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  		Fig. 2A —Radiofrequency ablation of renal cell carcinoma in 80-year-old man (patient 4). Sonogram obtained before radiofrequency ablation shows right renal mass marked with electronic calipers. L = liver, K = kidney, 1 = first diameter, 2 = second diameter.

 

Figure 6
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  		Fig. 2B —Radiofrequency ablation of renal cell carcinoma in 80-year-old man (patient 4). Color Doppler sonogram shows hepatic vessels (arrowhead) that were in needle path of possible ablation of renal mass (M).

 

Figure 7
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  		Fig. 2C —Radiofrequency ablation of renal cell carcinoma in 80-year-old man (patient 4). Color flow sonogram shows renal vessels (arrowhead) just beyond renal mass (M).

 

Figure 8
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  		Fig. 2D —Radiofrequency ablation of renal cell carcinoma in 80-year-old man (patient 4). Needle was passed transhepatically (straight arrow) under sonographic guidance, thus avoiding hepatic vessels. Sonogram obtained during treatment shows increased echogenicity of mass (curved arrow). L = liver.

 

Figure 9
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  		Fig. 2E —Radiofrequency ablation of renal cell carcinoma in 80-year-old man (patient 4). CT scan obtained after radiofrequency ablation shows avascular mass (arrow) in right kidney.

 

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