A Different Pattern of Brunner Gland Adenoma on Endoscopic Ultrasonography

Brunner gland adenomas (BGA) are benign and rare tumors of small intestine. They are seen at a rate of %10.6 of all benign duodenal tumors. Symptoms can be variable and abdominal pain, nausea, vomiting, hematemesis and melena can be seen in some cases. Diagnosis is difficult with mucosal biopsies, becasue of the location in submucosa and generally made by endoscopic resection material. It should be distinguished from lipoma, leiyomyoma, neurogenic and carcinoid tumors through endoscopic and radiologic methods. Endosonography (EUS) is helpful for diagnosis due to detection of  originate from which layer of duodenum wall, echogenity and tissue homogeneity of lesion. In this article, we reported a BGA located with EUS and resected with endoscopic polypectomy. BGA was reported before as generally heterogeneus-hypoechoic and characterised with cystic areas, however, in our case, BGA was detected as a different echo pattern on EUS