A 61-year-old woman who presented with hematemesis and melena was admitted to the endoscopy unit. The patient underwent upper digestive endoscopy. The scope revealed an ulcerative duodenal mass. Proton pump inhibitors were given for one month, and the patient underwent another endoscopy. Again, the scope revealed a duodenal mass in the bulb. It is challenging to examine lesions in the bulb when the scope is in the anteversion position, so we do a retroflection to assess the lesion better.
What is your provisional diagnosis, and how to proceed?
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