Mucinous Neoplasms of the Vermiform Appendix.

摘要: Most epithelial neoplasms of the vermiform appendix are mucinous type and can be stratified into 3 main diagnostic categories: (1) adenoma, (2) uncertain malignant potential or low-grade neoplasm, (3) adenocarcinoma. Clinically, appendiceal adenomas adenocarcinomas may present as right lower abdominal pain mimicking acute appendicitis, a mass, pseudomyxoma peritonei. Nomenclature currently in use to describe diagnose tumors appendix, particularly those low morphologic grade, varies among surgical pathologists centers, resulting different histologic clinical features being attributed these entities literature. It help, already attempted by some investigators, simply apply algorithmic parameters for such lesions (grade primary lesion, extensiveness composite extra-appendiceal involvement, so forth), instead adopting rigid classification categories. This approach allows more objective data collected hopes that it will provide nuanced understanding behavior spectrum tumors. Remaining focused on histopathologic secondary sites involvement help avoiding circular reasoning.