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Endoscopic image of type IIc esophageal cancer. A: Endoscopic image of type IIc esophageal cancer immediately after iodine staining; B: Endoscopic image of type IIc esophageal cancer 2 min after iodine staining. The pink-color sign is observed on the right side of the lesion; C: Endoscopic image of type IIc esophageal cancer 3 min after sodium thiosulfate spraying.
