PMC9939013_01
Endoscopic Ultrasound (EUS) showing a mass originated from 2nd mucosal layer
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FIG1
EUS confirmed features suggestive of a lipoma, including an intense homogeneous hyperechoic mass originating from the submucosa and it measured 15 mm by 23 mm in diameter (Figure 1).
Upper endoscopy revealed a large pedunclated mass at 1st part of the duodenum
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FIG2
Upper endoscopy revealed an around 2 cm, single large pedunculated polyp with an ulcerated tip in the first part of the duodenum (Figure 2).
Post piecemeal resection of the polyp
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FIG3
The patient underwent endoscopic resection of the polyp (Figure 3), initially, we injected the base of the polyp with saline and methylene blue to rise it and then we grasped and pulled the polyp into the stomach with a Roth net.
Section shows duodenal mucosa with submucosal circumscribed collection of mature adipocytes consistent with lipoma (Hematoxylin and eosine, 40 )
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FIG4
The histopathological finding is consistent with a lipoma (Figure 4).