Renal Function and Complications

No patients had significant renal dysfunction after RF ablation procedures. Technetium-99m MAG 3 scintigraphy was useful to evaluate the respective renal

Radical Prostatectomy

Fig. 4. A 68-year-old woman with left RCC. Left nephrectomy was avoided because of her poor renal function. The dynamic magnetic resonance (MR) image before RF ablation shows well-enhanced tumor protruding into the renal sinus (a). After RF ablation, the dynamic MR image shows disappearance of enhancement of the upper portion of the tumor, while residual enhancement of the lower portion of the tumor is depicted (b)

Fig. 4. A 68-year-old woman with left RCC. Left nephrectomy was avoided because of her poor renal function. The dynamic magnetic resonance (MR) image before RF ablation shows well-enhanced tumor protruding into the renal sinus (a). After RF ablation, the dynamic MR image shows disappearance of enhancement of the upper portion of the tumor, while residual enhancement of the lower portion of the tumor is depicted (b)

function after RF ablation. In four patients, increase in the value of ERPF (effective renal plasma flow) of the untreated kidney immediately after the RF ablation was observed. Although this seemed to be a compensatory increase in the renal function of the untreated kidney, no statistically significant difference was observed.

Complications were as follows: macrohematuria in one patient, microhema-turia in eight patients, perirenal or subcapsular hematoma in four patients, and pneumothorax in one patient. These required only conservative observation, and all were resolved without any treatment.

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