Multiple carcinoids in the duodenum, pancreas and stomach accompanied with type A gastritis: A case report

Figure 1 Histological examination of each carcinoid in three organs. A: Duodenal carcinoid showing anastomotic ribbon-like formation in the interstitium with predominant blood vessels and only a small amount of connective tissue (HE, × 10); B: A palisade-like carcinoid in the pancreas, and a moderate amount of fibrous connective tissue observed in the interstitium (HE, × 20); C: Vesicular carcinoids in the stomach (arrow) (HE, × 10).

Figure 2 Imunohistochemical staining of carcinoids in the duodenum and pancreas (× 20). A: Gatrin immunostaining showing a quite positive carcinoid in the duodenum; B: Serotonin immunostaining showing a strongly positive carcinoid in the pancreas.