Cystic echinococcosis of the liver and lung treated by radiofrequency thermal ablation: An ex-vivo pilot experimental study in animal models

Figure 5 Echinococcus cyst of the lung before (A) and after (B-D) RTA. External surface of the cyst (upper panel), findings after sectioning (middle panel), and histology (lower panel). After treatment (B) the cyst looks shrunken, rigid and dehydrated. Post-RTA section of the cyst (C) shows the endocyst is thick, papyraceous-like and attached to pericystium. Histology (HE stain, × 4) shows complete necrosis of the cyst wall (E). An adjacent cyst (indicated by arrow A in slides A, B, D) was necrotic and killed at histology (F) despite no direct treatment. RN: RITA needle; SN: Sentinel needle.