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Fig. 3B. —Diagrams of lung neoplasm before and after radiofrequency
ablation. Diagram shows same tumoral lung lesion after radiofrequency
ablation. Area of enzymatic necrosis with partially destroyed capillaries,
microthrombosis, and lysosomal enzyme activation is labeled D. Peripheral ring
of this area (D1) appears to express presence of microhemorrhagic border mixed
with outermost layer (E), with edema, inflammatory reaction, and vascular
congestion. A = central area intersected by electrode needle; B = partial
emptying (dark), likely due to vaporization of lesion, and coagulative
necrotic area with destroyed capillaries and "ghost phenomenon"
(term used by Miao et al. [29]
to describe seemingly intact tissue after sudden thermal coagulation); C =
coagulative necrotic area surrounding nodule and containing collapsed alveoli
with entrapped air and ghost phenomenon.
