A 69-year-old man hospitalized with chronic renal failure was introduced to our department to scrutinize the cause of anemia and black stool. The source of bleeding could not be identified with esophagogastroduodenoscopy and colonoscopy. Since blood was observed in the jejunum on capsule endoscopy, double-balloon enteroscopy was performed, which revealed a small bleeding ulcer at 40 cm distal from the ligament of Treitz, and hemostatic treatment was performed. At this procedure, a 20mm elevated lesion that looked like a submucosal tumor was observed at 20 cm distal from the ligament of Treitz (Figure 1). The lesion was slightly faded and had a dimpling on the top, from which serous liquid was discharged (Figure 1). We biopsied the lesion using standard biopsy forceps for colonoscopy (Radial Jaw4 Standard Capacity; Boston Scientific, Marlborough, MA). Histological findings confirmed acinar tissue on the submucosa, which was positive for chymotrypsin staining, and the lesion was diagnosed as a jejunal ectopic pancreas (Figure 2). At present, the patient remains free of their original symptoms.