Mixed carcinoid – adenocarcinoma of vermifrom appendix: A case report.

Three histology types of appendiceal carcinoid are classified as: tubular carcinoid or classic carcinoid; goblet cell carcinoid or adenocarcinoid; and mixed carcinoid-adenocarcinoma. Each have a different prognosis and method of treatment. We report a 56-year-old Thai woman who presented with an intermittent abdominal pain in the right lower quadrant for nine months and was finally diagnosed as acute appendicitis. Appendicectomy was performed and the patients was unexpectedly found to have a mixed carcinoid-adenocarcinoma. Subsequently, hemicolectomy was carry out to provide appropriate treatment. Immunostains and ultratructural studies were performed to confirm the combination of endocrine and glandular differentiation.