Epithelial noncarcinoid tumors and tumor-like lesions of the appendix. A clinicopathologic study of 184 patients with a multivariate analysis of prognostic factors

Abstract

The distribution of mucin within the abdomen and the presence of cells outside the visceral peritoneum of the appendix are important prognostic factors that should be recorded in these neoplasms. Tumors designated as UMP lesions behave in a benign or low grade fashion.