Fig. 3
From: Long-term outcomes of cryoablation for biopsy-proven T1 stage renal cell carcinoma
Ablation and recurrence after PCA (shown by arrows). A Contrast-enhanced CT before cryoablation, showing nonuniform enhancement of tumor. B One week after ablation, the tumor showed no enhancement, indicating that the tumor has been completely ablated. C Twenty-four months after the operation, the tumor still has no enhancement, indicating no recurrence. D Sixty-one months after the ablation, a tumor appeared at the original location with enhancement, indicating recurrence