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Fig. 5D. —Images of kidneys treated with hypertonic-saline (HS)-augmented
bipolar (A–D) and (E and F) monopolar
radiofrequency for 10 min in dog model. Nonenhanced areas were determined in
each slice and summed to determine volume. Photomicrograph of radiofrequency
ablation zone in kidney seen in A obtained 3 days after procedure shows
confined area of coagulation necrosis (N) surrounded by peripheral zones of
hemorrhage (H), and normal renal parenchyma (R). Note typical coagulation
necrosis with preserved architecture of kidney having ghostlike tubular
profiles with very faintly staining nuclei. (H and E, x40)
