Figure 1. An esophageal surface ulcer occurred after intravitreal ranibizumab injection. (a) Ultrasound gastroscopy showed an esophageal surface ulcer 20 - 24 cm from the incisor. The central of ulcer was covered with fibrinous tissue, and the surrounding mucosae were flushing and congestive. (b) Ultrasonography revealed that the mucosae were slightly incrassated with a hypoechoic variation in the lesion area. (c) The fibrinous tissue was stained by Lugol solution. (d) Ultrasound gastroscopy showed that the mucosae in the gastric antrum were smooth.
Figure 2. The boundary of the esophageal ulcer was visualized using magnifying endoscopy with narrow-band imaging (ME-NBI). ME-NBI showed the boundary of the esophageal ulcer with color transformation to hazel, and no abnormal blood vessel was observed, indicating that neither intestinal metaplasia nor cancerization occurred in the esophageal ulcer.