Figure 1: (a) Endoscopic image revealing one of several irregular, sessile, tan intramucosal masses in the proximal duodenum. (b) Histology demonstrates a spindle cell tumor (T) in the duodenal mucosa displacing pre-existing glands; adjacent lamina propria (LP) exhibits moderate mixed inflammation; pale flocculent Brünner’s glands (B) lie below; H&E, 200X.