PMC166166_01
A) A prepyloric polyp causing obstruction at the pyloric channel. B)Injection of diluted adrenaline solution to the base of the polyp. C) Removal of the polyp with a snare.
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F1
Upper gastrointestinal endoscopy revealed a 30 mm prepyloric sessile polyp covered with normal mucosa and which partially obstructed the entrance of the pyloric channel Figure 1A. The polyp was slightly elevated by submucosal injection of diluted adrenaline solution (0.0125 mg/mL in saline) targeted at 4 points around the base Figure 1B. The polyp was removed with a snare and diathermy was used at a level of 40 watts Figure 1C.
Hyperplastic surface epithelium and cystically dilated glands with inflammatory infiltration and smooth muscle cells in lamina propria, X40, H+E.
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F2
H. pylori yielded a negative result. Histopathologic examination of the polypectomy specimen showed a hyperplastic polyp without any malignant features Figure 2.
A complete healing at the polypectomy site was observed on the follow-up endoscopy after a 12-week course of PPI therapy.
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F3
Follow-up endoscopy after a 12-week course of proton pomp inhibitor (PPI) therapy showed a complete healing of the polypectomy site with no remnant tissue related to the polyp Figure 3.