Quiz 3 Bowels part 1

Question 1

intestinal atresia

Answer 1

narrowing or absence of portion of intestine

Question 2

what type of atresia is associated with Down’s syndrome and the most common form of atresia?

Answer 2

duodenal atresia

Question 3

what is most common cause of non-duodenal atresia?

Answer 3

vascular malformation in utero leading to decreased intestinal profusion and ischemia

Question 4

Hirshsprungs disease

Answer 4

neural crest cells don’t migrate during fetal development of the intestine

• absence of ganglion cells
• infected segment fails to relax, causing constipation and obstruction of bowel
• no peristalsis

Question 5

suspect hirshprugs when?

Answer 5

a baby hasn’t passed meconium in first 48 hours of life

Question 6

Intussception

Answer 6

telescoping proximal end in distal end

red current jelly stool

Question 7

Meckel’s diverticulum

Answer 7

blebs out of intestine in distal ileum 2 feet rom ileocecal valve

• vestigial remnant of vetelline duct
• most common intestinal malformation

Question 8

true diverticula vs false

Answer 8

true: all layers including muscle
false: only mucosa and submucosa

Question 9

where is diverticulosis most common

Answer 9

sigmoid colon

Question 10

cause of intestinal obstruction

Answer 10

volvulus
intussception
hirshprungs

Question 11

Celiac

Answer 11

TTG test is best
villus atrophy or blunted villi in sm intestine
can’t absorb fat soluble vitamins or iron

Question 12

diagnosis of celiac

Answer 12

have to have frank ab response to gliadin

Question 13

IBD

Answer 13

Crohns and UC

Question 14

Crohns

Answer 14

can affect any part of the GI from mouth to anuns (skip lesions)
non casseating granulomas
full thickness infiltrative

Question 15

UC

Answer 15

restricted to colon and rectum
no skipping, just moves up
no granuloma
crypt abscess
pseudopolyps
increased risk of colon cancer

Question 16

hist of crohns

Answer 16

• lymph cells from mucosa all the way through muscular is layer
• transmural full thickness lesion
• non-caseating granuloma

Question 17

where is crohns most commonly found?

Answer 17

ileum