Adenocarcinoma In Situ Arising from Brunner’s Gland Treated by Endoscopic Mucosal Resection

Figure 1

Endoscopic images. Esophagogastroduodenoscopy shows a solitary submucosal tumor in the duodenal second portion. The top of the tumor is slightly depressed, showing a reddish color on white light imaging (a, b) and a brownish color on narrow band imaging (c). Endoscopic ultrasonography reveals that the hypoechoic mass is mainly confined to the mucosal layer (d). A small cystic area is also seen (white arrow) (e).

(a)

(b)

(c)

(d)

(e)