Colon Flashcards
What is the most common form of IBD
UC
what is intussusception
when the bowel invaginates or telescopes into itself
- this results in a thickened bowel and narrowed lumen at the folded area, which can result in dilatation of the small bowel for example
- causes a palpable mass in the abdomen and obstruction to the passage of faeces
demographic of intussusception
most common in children 6 months - 2 years
more common in boys
presentation of intussusception
Severe, colicky abdominal pain
Pale, lethargic and unwell child
“Redcurrant jelly stool”
Right upper quadrant mass on palpation. This is described as “sausage-shaped”
Vomiting
Intestinal obstruction (constipation, abdominal distension)
associated conditions with intussusception
concurrent viral illness Henoch-Schonlein purpura Cystic fibrosis Intestinal polyps Meckel diverticulum
why can a viral illness lead to intussusception
produces swelling of the lining of the intestine, which then slips into the intestine below
what causes the redcurrant jelly in intussusception
The trapped section of bowel may have its blood supply cut off, which causes ischaemia.
Mucosa is sensitive to ischaemia and responds by causing sloughing off into the gut.
This creates a “red currant jelly” stool, which is sloughed mucosa, blood, and mucus
diagnosis of intussusception
US
contrast enema
