FMS Week 9: Pathology of Acute Inflammation Flashcards
Typical inflammatory Reaction develops through a series of 5 sequential steps
5 Steps
Features of Acute Inflammation
Features of Chronic Inflammation
Clinical Scenario 1
Pathologic Features of Acute Appendicitis
3 Listed
- Swollen and erythematous appendix
- Adhesions with appendix curling and attaches to itself and to the cecum
- perforation of appendix wall secondary to mural necrosis is not uncommon if untreated
Acute Appendicitis is common in _________ and requires _________.
Children and requires emergency abdominal surgery
Acute Appendicitis is caused by?
&
Composed of?
5 Listed
Non-specific obstruction of the appendiceal lumen
Typically
- fecal material
- undigested food
- foreign material
- enlarged lymphoid follicle
- tumor
Acute Appendicitis obstruction results in?
4 Listed
- Intraluminal bacterial overgrowth
- bacterial invasion of the wall
- inflammation ischemia
- eventually leads to perforation
Tissue/Pathology?
Normal appendix
Tissue/Pathology?
Normal Appendix
Tissue/Pathology?
Normal Appendix
Tissue/Pathology?
Acute Appendicitis
Tissue/Pathology?
Acute Appendicitis
These are neutrophils, with a bunch of red blood cells, fluid has replaced columnar epithelium, this is basically called pus
Effects at the Tissue Level of Acute Inflammation
7 Listed
*neutrophil emigration
Clinical Scenario 2
Acute Cholecystitis pain typically felt?
Right Abdomen upper quadrant
Acute Appendicitis pain usually felt?
Right abdomen lower quadrant
Acute Cholecystitis Presentation
- Nausea
- Vomiting
- Pain in the right upper quadrant of abdomen
Acute Cholecystitis is usually caused by?
90% of acute Cholecystitis is associated with gallstones
Acute Cholecystitis Histopathology
5 Listed
The gallbladder is usually enlarged and the wall is thickened by edema, vascular congestion, hemorrhage, or it may appear necrotic
Precipitating event of Acute Cholecystitis
occlusion of the neck of the gallbladder or cystic duct
Occlusion of the neck of the gallbladder or cystic duct causes?
Increased intraluminal pressure causes dilation of the gallbladder and mural edema
Acute Cholecystitis and Infection
Infection is considered secondary and does not contribute to the onset of Acute Cholecystitis