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.
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).
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.
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).
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.
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).
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).
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.
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.