New magnifying endoscopic classification for superficial esophageal squamous cell carcinoma

Figure 1 Magnifying endoscopy classification for esophageal squamous cell carcinoma. A: Type B1, abnormal microvessels with four characteristic findings (meandering, dilation, caliber change, and various shapes) and a conserved loop-like formation; B: Type B2, stretched and markedly elongated transformations without a loop-like formation; C: Type B3, highly dilated irregular vessels with a caliber that appears to be more than three times that of type B2 vessels.