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Difference between revisions of "Vermiform appendix"
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'''Vermiform appendix''' is | The '''Vermiform appendix''' is, usually, just called ''appendix''. Taking it out is the bread 'n butter of general surgery. | ||
The appendix is a vestigial structure that is thought to have arisen from a larger cecum. Larger cecae are often seen in herbivores and thought to facilitate better digestion of plant matter.<ref>Dawkins R. The Greatest Show on Earth: The Evidence for Evolution. ISBN 978-1416594789.</ref> | |||
==Acute appendicitis== | ==Acute appendicitis== | ||
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*LAMN = low-grade appendiceal mucinous neoplasm | *LAMN = low-grade appendiceal mucinous neoplasm. | ||
*LAMN ex-appy = LAMN with extra-appendiceal spread | *LAMN ex-appy = LAMN with extra-appendiceal spread. | ||
*MACA = mucinous adenocarcinoma | *MACA = mucinous adenocarcinoma. | ||
===Benign mucinous tumour=== | ===Benign mucinous tumour=== | ||
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==Granulomatous appendicitis== | ==Granulomatous appendicitis== | ||
Most common cause: | |||
Most common: | |||
*Yersinia appendicitis.<ref name=pmid11257626>{{cite journal |author=Lamps LW, Madhusudhan KT, Greenson JK, ''et al.'' |title=The role of Yersinia enterocolitica and Yersinia pseudotuberculosis in granulomatous appendicitis: a histologic and molecular study |journal=Am. J. Surg. Pathol. |volume=25 |issue=4 |pages=508–15 |year=2001 |month=April |pmid=11257626 |doi= |url=}}</ref> | *Yersinia appendicitis.<ref name=pmid11257626>{{cite journal |author=Lamps LW, Madhusudhan KT, Greenson JK, ''et al.'' |title=The role of Yersinia enterocolitica and Yersinia pseudotuberculosis in granulomatous appendicitis: a histologic and molecular study |journal=Am. J. Surg. Pathol. |volume=25 |issue=4 |pages=508–15 |year=2001 |month=April |pmid=11257626 |doi= |url=}}</ref> | ||
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*Foreign body reaction. | *Foreign body reaction. | ||
*Interval (delayed) appendectomy. | *Interval (delayed) appendectomy. | ||
===Microscopic=== | |||
Features: | |||
*Granulomas. | |||
==Goblet cell carcinoid== | ==Goblet cell carcinoid== | ||
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Notes: | Notes: | ||
*Nice review of stains in Pahlavan and Kanthan.<ref name=pmid15967038>{{cite journal |author=Pahlavan PS, Kanthan R |title=Goblet cell carcinoid of the appendix |journal=World J Surg Oncol |volume=3 |issue= |pages=36 |year=2005 |month=June |pmid=15967038 |pmc=1182398 |doi=10.1186/1477-7819-3-36 |url=http://wjso.com/content/3/1/36}}</ref> | *Nice review of stains in Pahlavan and Kanthan.<ref name=pmid15967038>{{cite journal |author=Pahlavan PS, Kanthan R |title=Goblet cell carcinoid of the appendix |journal=World J Surg Oncol |volume=3 |issue= |pages=36 |year=2005 |month=June |pmid=15967038 |pmc=1182398 |doi=10.1186/1477-7819-3-36 |url=http://wjso.com/content/3/1/36}}</ref> | ||
==See also== | ==See also== | ||
*[[Colon]] | *[[Colon]]. | ||
*[[Gastrointestinal pathology]] | *[[Gastrointestinal pathology]]. | ||
==References== | ==References== | ||