Chronic cholecystitis pathophysiology: Difference between revisions

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==Pathophysiology==
==Pathophysiology==
===Acute Cholecystitis===
===Chronic Cholecystitis===
Cholecystitis is caused by an obstruction of the bile duct due to impaction of a gall stone.<ref name="pmid7396076">{{cite journal |author=Roslyn JJ, DenBesten L, Thompson JE, Silverman BF |title=Roles of lithogenic bile and cystic duct occlusion in the pathogenesis of acute cholecystitis |journal=[[American Journal of Surgery]] |volume=140 |issue=1 |pages=126–30 |year=1980 |month=July |pmid=7396076 |doi= |url=http://linkinghub.elsevier.com/retrieve/pii/0002-9610(80)90428-6 |accessdate=2012-08-20}}</ref> Gall stone impaction leads to damage of the mucosal surface of the gallbladder and bile stasis.
Factors which induce cholecystits are
* Lithogenic bile
* Duct obstruction
Acute inflammation is not always necessary for the development of acute cholecystitis.


Gallstones are one of the major causes of cholecystitis. These cause physical obstruction to the lumen of the neck or cystic duct. This results in an increase in the intraluminal pressure. The degree and duration of obstruction are the two main factors that determine its progression. <ref name="www.ncbi.nlm.nih.gov">{{Cite web  | last =  | first =  | title = Definitions, pathophysiology, and epidemiology of acute cholangitis and cholecystitis: Tokyo Guidelines | url = http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2784509/ | publisher =  | date =  | accessdate = 22 September 2012 }}</ref>
Gallstones are one of the major causes of cholecystitis. These cause physical obstruction to the lumen of the neck or cystic duct. This results in an increase in the intraluminal pressure. The degree and duration of obstruction are the two main factors that determine its progression.  
 
* Partial obstruction of short duration may cause biliary colic. Long-term obstruction may progress to chronic cholecystitis.


* If the obstruction is partial and of short duration, the patient may experience biliary colic and in the long term, it may progress to chronic cholecystitis.
* If the obstruction is complete and of longer duration, the patient can develop acute cholecystitis.


===Chronic Cholecystitis===
Some studies suggest that the pancreatic biliary reflux plays a role as a co factor for the development of chronic cholecystitis. Occult pancreatic biliary reflux can be diagnosed by measuring the levels of biliary amylase. <ref name="pmid22662601">{{cite journal |author=Amr AR, Hamdy HM, Nasr MM, Hedaya MS, Hassan AM |title=Effect of pancreatic biliary reflux as a cofactor in cholecystitis |journal=[[Journal of the Egyptian Society of Parasitology]] |volume=42 |issue=1 |pages=121–8 |year=2012 |month=April |pmid=22662601 |doi= |url= |accessdate=2012-08-20}}</ref><ref name="pmid11483446">{{cite journal |vauthors=Kalloo AN, Kantsevoy SV |title=Gallstones and biliary disease |journal=Prim. Care |volume=28 |issue=3 |pages=591–606, vii |year=2001 |pmid=11483446 |doi= |url=}}</ref><ref name="pmid10750875">{{cite journal |vauthors=Ahmed A, Cheung RC, Keeffe EB |title=Management of gallstones and their complications |journal=Am Fam Physician |volume=61 |issue=6 |pages=1673–80, 1687–8 |year=2000 |pmid=10750875 |doi= |url=}}</ref>
Some studies suggest that the pancreatic biliary reflux plays a role as a co factor for the development of chronic cholecystitis. Occult pancreatic biliary reflux can be diagnosed by measuring the levels of biliary amylase. <ref name="pmid22662601">{{cite journal |author=Amr AR, Hamdy HM, Nasr MM, Hedaya MS, Hassan AM |title=Effect of pancreatic biliary reflux as a cofactor in cholecystitis |journal=[[Journal of the Egyptian Society of Parasitology]] |volume=42 |issue=1 |pages=121–8 |year=2012 |month=April |pmid=22662601 |doi= |url= |accessdate=2012-08-20}}</ref><ref name="pmid11483446">{{cite journal |vauthors=Kalloo AN, Kantsevoy SV |title=Gallstones and biliary disease |journal=Prim. Care |volume=28 |issue=3 |pages=591–606, vii |year=2001 |pmid=11483446 |doi= |url=}}</ref><ref name="pmid10750875">{{cite journal |vauthors=Ahmed A, Cheung RC, Keeffe EB |title=Management of gallstones and their complications |journal=Am Fam Physician |volume=61 |issue=6 |pages=1673–80, 1687–8 |year=2000 |pmid=10750875 |doi= |url=}}</ref>



Revision as of 17:13, 5 February 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]

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Overview

Pathophysiology

Chronic Cholecystitis

Gallstones are one of the major causes of cholecystitis. These cause physical obstruction to the lumen of the neck or cystic duct. This results in an increase in the intraluminal pressure. The degree and duration of obstruction are the two main factors that determine its progression.

  • Partial obstruction of short duration may cause biliary colic. Long-term obstruction may progress to chronic cholecystitis.


Some studies suggest that the pancreatic biliary reflux plays a role as a co factor for the development of chronic cholecystitis. Occult pancreatic biliary reflux can be diagnosed by measuring the levels of biliary amylase. [1][2][3]

Acute Acalculous Cholecystitis

Gallbladder Ischemia/Reperfusion Injury[4]

  • Prolonged periods of ischemia to the gall bladder leads to disruption of the normal mucosal surface.
  • Lipopolysaccharides are exposed leading to activation of various coagulation cascades.
  • Reperfusion leads to an increased humoral response which leads to further damage causing cholecystitis.

Bile Stasis[4]

Pathology

Chornic Cholecystitis

{{#ev:youtube|gxGvP3GV_1E}}

Histological image of chronic cholecystitis; Low magnification. By Nephron - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=30991393 Source:[5]


References

  1. Amr AR, Hamdy HM, Nasr MM, Hedaya MS, Hassan AM (2012). "Effect of pancreatic biliary reflux as a cofactor in cholecystitis". Journal of the Egyptian Society of Parasitology. 42 (1): 121–8. PMID 22662601. Unknown parameter |month= ignored (help); |access-date= requires |url= (help)
  2. Kalloo AN, Kantsevoy SV (2001). "Gallstones and biliary disease". Prim. Care. 28 (3): 591–606, vii. PMID 11483446.
  3. Ahmed A, Cheung RC, Keeffe EB (2000). "Management of gallstones and their complications". Am Fam Physician. 61 (6): 1673–80, 1687–8. PMID 10750875.
  4. 4.0 4.1 "Acute acalculous cholecystitis - Surgical Treatment - NCBI Bookshelf". Retrieved 2012-08-20.
  5. "Acute cholecystitis - Libre Pathology".


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