Figure 6.

Findings for an m2 cancer of the esophagus. A: Endoscopic features. A reddish flat lesion was located on the anterior wall of the middle esophagus; B: Endoscopic features after iodine dye. Biopsy specimens showed squamous cell carcinoma; C: Endoscopic ultrasound (EUS) features. The white dotted line indicates the extent of the lesion. EUS revealed a thickness in the second layer and a disappearance of the third layer. The yellow line with an arrow indicates the intact fourth layer; D: Pathological findings. The tumor was confined to the lamina propria. (Hematoxylin and eosin stain, × 100).