Clinical features of early esophageal neoplastic lesions at different stages and efficacy and prognosis after endoscopic submucosal dissection

Figure 1 Endoscopic submucosal dissection of an early esophageal squamous cell carcinoma. A: White light endoscopy to describe lesion; B: Virtual pigment description of the lesion; C: Pericyclic marker lesion; D: Submucosal dissection; E: Post-endoscopic resection of ulcer; F: Fixed specimen.

Figure 2 Kaplan-Meier curves show overall survival, disease-free survival, and disease-specific survival during follow-up. A: Overall survival; B: Disease-free survival (DFS); C: Disease-specific survival; D: Differentiation-based DFS; E: DFS based on depth of invasion; F: DFS based on curative resection; G: Recurrence-metastasis-free survival (RMFS) based on curative resection; H: RMFS based on noncurative resection combined with adjuvant therapy; I: DFS based on prior esophageal cancer; J: RMFS based on the prior esophageal cancer. LGIN: Low-grade intraepithelial neoplasia; HGIN: High-grade intraepithelial neoplasia.