Endoscopic resection of an ampullary carcinoid presenting with upper gastrointestinal bleeding: A case report and review of the literature

Figure 2 Histological examination of the resected specimen revealing carcinoid in the mucosa and submucosa, composed of discrete solid nests of round tumor cells with central nuclei and occasionally with gland-like lumina (A) and solid nests of tumor cells involving the musclaris propria (B) (HE, x 100).