Dobson lecture 3: Small Bowel, Colon, Peritoneum Flashcards
What are the most common causes of Intestinal obstruction
80% due to hernias, adhesions, volvulus, intussusception
most common cause of obstruction worldwide?
hernias
most common cause of obstruction in US
adhesions
-from surgery or trauma
Volvulus, what causes it
twisting of bowel
pdistention and tympanic sounds
Which obstruction gets kids?
intussusception
-bowel telescopes in
Presentation of ischemic bowel disease?
older people and it’s sudden
What artery occlusion portends to the worst outcome?
SMA!
Which desease is the only one associated with defective lymphatic transport?
whipple disease
What is another name for celiac disease?
immune-mediated enteropathy
what does biopsy look like on celiac disease?
- LOSS OF VILLI-
- increased lymphocytic T-cells
What lab test can be used for celiac disease
TTG test (tissue transglutaminase)
What happens on the skin with celiac disease?
dermatitis herpatiformis
What to think about when celiac disease symptoms recurr?
malignancy, or off diet
- EATL
- adenocarcinoma
Tropical sprue
happens in NOT the duodenum
Guillan barre, what causes it?
campylobacter species
What causes pseudomembranous collitis?
C. dificile
What is the histo look like on pseudomembransous collitis?
volcanic erupting crypts
worms out the butt hole, what is it?
pinworms…. enterobius species
IBS, what is unique about it?
there’s NO PATHOLOGIC ABNORMALITY
What are the two entities in IBS?
Crohn disease and Ulcerative colitis
Crohn disease?
skip lesions
- transmural
- creeping fat (fat wrapping)
- fistulas and strictures
- noncaseating granulomas
- RLQ location usually
Ulcerative colitis?
starts at rectum and goes proximally
- NOT transmural
- no granulomas
- relapsing disrder
- PSC
Extra intestinal manifestation of Crohn’s
clubbing of fingertips, strictures, increased risk for adenocarcinoma
What kind of polyp do you want to have?
the hyperplastic kind!
- least likely to be malignant
- rule out serrated adenoma
