Superficial esophageal lesions detected by endoscopic ultrasound enhanced with submucosal edema

Figure 4 Endoscopic ultrasonography and tissue examination of esophageal lesions located in the superficial mucosa (A, B) and deep mucosa (C, D). A, C: Endoscopic ultrasonography (EUS) imaging: high echoic lesions located in the mucosa (A) and relatively high echoic lesion (C) located in the mucosa with obvious submucosal edema, as visualized by EUS; B, D: Pathology: tissue examination showed that the lesions were located in the mucosa with complete (B) and incomplete (D) squamous epithelium, intact muscularis mucosa, and obvious submucosal edema.