“…Other names used to diagnose such tumors include mucin-producing carcinoid [47], composite carcinoid-adenocarcinoma [48,49], composite carcinoid tumor [50], mixed adenocarcinoid tumor [51], and composite glandular-neuroendocrine mixed tumor [30]. These neoplasms have been reported in the esophagus [47,52], stomach [18,48,53,54,55], ampulla of Vater [49,56], ileum [51], and large bowel [30,50,57,58,59,60,61]. To date, about 60 cases have been reported in the literature.…”