Appendix cecal adenocarcinoma with pseudomyxoma peritonei

case report and literature review

Abstract

Pseudomyxoma peritonei is a rare condition with a reported incidence of one case per million population per year, with variable presentation, being considered a “false mucinous tumor of the peritoneum” which there is an accumulation of gelatinous material within the peritoneum from seeding of mucin-secreting cells from an ovarian tumor. The differential diagnosis of pseudomyxoma peritonei includes peritoneal carcinomatosis, disseminated lymphoma, acute bacterial peritonitis, large ovarian cystadenocarcinoma, necrotic tumor filling the abdominal cavity (e.g.: liposarcoma), pseudocysts with pancreatitis, abdominal tuberculosis and, more rarely, primary peritoneal mesothelioma. Most studies agree on the highly typical sonographic findings of pseudomyxoma peritonei, such as scalloping of the liver margin and ascitic septations.