PMC5196236_01
Endoscopic findings of the esophagus. EGD showed a mass in the lower esophagus (a) and it was negative in iodine staining (b). The mass disappeared after HP eradication therapy (c) and there was no negative area of iodine staining (d).
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After 2 months of treatment, the 13C-urea breath test remained positive, although follow-up EGD and CT scanning showed complete disappearance of the mass (Fig. 1B).