Adenocarcinoid tumour of the appendix masquerading as acute appendicitis: a word of caution.

Adenocarcinoids are rare and aggressive tumors with histological features of both carcinoid tumor and adenocarcinoma. We report a case of a 32-year-old man with diffuse infiltration of the appendix wall and mesoappendix by an adenocarcinoid. Due to the involvement, a hemicolectomy was performed at a later date. We suggest that patients with diffuse appendiceal involvement require an aggressive surgical therapy and follow-up.