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Ablative technique follow-up. (a) Before the cryo-ablative treatment, CEUS shows an iso-vascular, partially exophytic lesion at the upper pole of the right kidney (curved arrow). After treatment, CEUS shows diffuse and persistent intralesional vascularization (arrowheads) to 24 h (b); at 7 (c) and 14 days (d) there is a progressive reduction of vascularity; after one month (e) the lesion appears completely avascular, a sign of a successful treatment.
