Appendix
Miscellaneous
Features to report for tumors

Reviewer: Jaleh Mansouri, M.D. (see Authors page)

Revised: 1 March 2016, last major update August 2012

Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.
Table of Contents
Definition / General
Cite this page: Features to report for tumors. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/appendixfeatures.html. Accessed December 5th, 2016.
Definition / General
  • Tumor size
  • Histologic type
  • Histologic grade
  • Depth of invasion
  • Angiolymphatic invasion
  • Perineural invasion
  • Margin involvement (surgical, radial, mesenteric)
  • Peritumoral satellite nodules (for appendiceal carcinomas)
  • Lymph node involvement (total involved, total examined)
  • Mitotic rate and Ki-67 labeling index (for appendiceal carcinoids)
  • Additional findings such as diverticula

    Notes:
    • As of June 2012, there are updated College of American Pathologists (CAP) protocols for both appendiceal adenocarcinomas and well-differentiated neuroendocrine tumors (NET) of the appendix: visit CAP.org and search for "Cancer Protocols and Checklists"
    • Staging for NETS does not include poorly differentiated (high-grade, G3) neuroendocrine carcinomas, small cell carcinomas, and goblet cell carcinoids (use CAP protocol for appendiceal carcinomas)