Fig. 1

Postoperative pathological and immunohistochemical results. (A) Case #1, insular carcinoid tumor (hematoxylin & eosin staining, 100×). (B) Case #4, trabecular carcinoid tumor (hematoxylin & eosin staining, 100×). (C) Case #11, strumal carcinoid tumor (hematoxylin & eosin staining, 100×). (D) Case #7, positive synaptophysin staining in carcinoid tumors (hematoxylin & eosin staining, 100×). (E) Case #12, chromogranin A positivity in carcinoid tumors (hematoxylin & eosin staining, 100×). (F) Case #7, strumal carcinoid tumor (hematoxylin & eosin staining, 100×)