... Mucinouscystadenoma is the commonest of the benign neoplasms of the appendix, with an incidence of 0.6% in appendicectomy specimens. We report a rare combination of these tumours and discuss the latest ... publication of this case report and any accompanyingimages. A copy of the written consent is available forreview by the Editor -in- Chief of this journal.Competing interests The authors declare that they ... purposes)CEA, cytokeratin, lysozyme, chromogranin A, serotonin and synaptophysin. Goblet cell carcinoids have increasedexpression of NAP1L1, MAGE-D2, and MTA-1 genes com-pared with benign carcinoids....