[Mucinous cystadenocarcinoma (malignant mucocele) of the cecal appendix].

Mucinous cystadenocarcinoma of the cecal appendix is a very rare malignant neoplasia. The majority of these tumours are discovered during surgery performed for other pathologies or as a chance finding in the histological analysis of surgically removed inflamed appendix. There is no characteristic symptomatology of this neoplasia which requires oncologically correct surgery, such as right hemicolectomy. The authors report a case study o peritoneal recidivation of a mucinous cystadenocarcinoma of the appendix.