Comparison of Endoscopic Radiofrequency Ablation and Argon Plasma Coagulation in Patients with Gastric Low-Grade Intraepithelial Neoplasia: A Large-Scale Retrospective Study

Figure 1

Radiofrequency ablation and argon plasma coagulation procedures for gastric low-grade intraepithelial neoplasia. (a) White-light imaging of the lesion. (b) Magnifying endoscopy with narrow-band imaging of the lesion (strong magnification). (c) After ablation, the surface of the lesion showed white coagulation and necrosis. (d) After scraping off the necrotic mucosal tissue on the surface. (e) White-light imaging of another lesion (reversed view). (f) After argon plasma coagulation, the surface of the lesion showed light yellow and brown-black coagulation and necrosis.

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