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Appendix chapter
Reviewer: Jaleh Mansouri, M.D. (see Reviewers page)
Revised: 21 October 2012, last major update October 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.
Table of contents
Primary references normal anatomy absent appendix diverticulosis duplication endometriosis inverted appendix inverted appendiceal stump intussusception lymphoid hyperplasia myxoglobulosis necrotizing arteritis
Appendicitis: acute adenovirus chronic CMV Crohn’s disease Enterobius eosinophilic granulomatous infectious mononucleosis interval malakoplakia measles periappendicitis Schistosoma Strongyloides ulcerative colitis xanthogranulomatous Yersinia
Benign tumors: adenoma (noncystic) fibrous obliteration/neuroma granular cell tumor hyperplastic polyp / mucinous hyperplasia mucinous cystadenoma mucocele neurofibroma sessile serrated polyp simple mucocele
Carcinoma: adenocarcinoma coexisting appendiceal and ovarian neoplasms metastases to appendix mucinous cystadenocarcinoma pseudomyxoma peritonei signet ring cell adenocarcinoma small cell carcinoma
Other tumors: carcinoid gastrointestinal stromal tumors goblet cell carcinoid L-cell carcinoid lymphoma/leukemia
Miscellaneous: staging grossing features to report
Alphabetical table of contents
A-E: absent appendix acute appendicitis adenocarcinoma adenoma (noncystic) adenovirus carcinoid chronic appendicitis CMV coexisting appendiceal and ovarian neoplasms Crohn’s disease diverticulosis duplication endometriosis Enterobius eosinophilic appendicitis
F-N: features to report fibrous obliteration/neuroma gastrointestinal stromal tumors goblet cell carcinoid granular cell tumor granulomatous appendicitis grossing hyperplastic polyp/mucinous hyperplasia infectious mononucleosis interval appendicitis inverted appendix inverted appendiceal stump intussusception L-cell carcinoid lymphoid hyperplasia lymphoma/leukemia malakoplakia measles metastases to appendix mucinous cystadenocarcinoma mucinous cystadenoma mucocele myxoglobulosis necrotizing arteritis
O-Z: neurofibroma normal anatomy periappendicitis primary references pseudomyxoma peritonei Schistosoma sessile serrated polyp signet ring cell adenocarcinoma simple mucocele small cell carcinoma staging Strongyloides ulcerative colitis xanthogranulomatous appendicitis Yersinia
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AJCC Cancer Staging Manual (7th ed)
American Journal of Clinical Pathology
American Journal of Surgical Pathology
Archives of Pathology and Laboratory Medicine
Human Pathology
Modern Pathology
End of Appendix chapter