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Objectives
Guidelines for magnified endoscopic diagnosis of esophageal squamous cell carcinoma (SCC) have been proposed by the Japan Esophageal Society. Type B1, B2, and B3 reflect increasing tumor invasion depths (within mucosal epithelium or into lamina propria mucosa [T1a‐EP/LPM], into muscularis mucosa or superficial invasion into submucosa [T1a‐MM/T1b‐SM1], and into submucosa [T1b‐SM2], respectively)...
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