Figure 4g. Bilateral RCC with no evidence of residual or recurrent RCC seen after cryoablation. (a) Contrast-enhanced CT scan shows bilateral solid renal masses (arrows). The masses proved to be RCCs at biopsy. Cryoablation was performed. (b–d) Contrast-enhanced CT scans obtained 6 weeks (b), 4 months (c), and 8 months (d) after percutaneous cryoablation of the left renal mass show a gradual decrease in the size of the mass with no contrast enhancement. (e–g) Contrast-enhanced CT scans obtained 1 month (e), 2 months (f), and 6 months (g) after laparoscopic cryoablation of the right renal mass show a gradual decrease in the size of the mass with no contrast enhancement (cf b–d).