Pathoma 10.8 Colon

Question 1

Hirschsprung disease is often seen in:

Answer 1

Down syndrome

Question 2

Dx: Acquired malformation of mucosal and submucosal capillary beds; Usually arise in the cecum and right colon (high wall tension); Hematochezia in older adults

Answer 2

Angiodysplasia

Question 3

High stress in R colon –> High stress in L colon –>

Answer 3

High stress in R colon –> angiodysplasia High stress in L colon –> diverticulitis Both result in hematochezia

Question 4

Dx: AD; From mouth through GI tract; results in bleeding

Answer 4

Hereditary Hemorrhagic Telangectasia

Question 5

What is the most common cause of Ischemic colitis?

Answer 5

Atherosclerosis of the SMA –> ischemic damage to the colon, usually at the splenic flexure

Question 6

Dx: Postprandial pain and weight loss; Bloody diarrhea

Answer 6

Ischemic colitis

Question 7

Dx: Serrated appearance on microscopy; Most common type of polyp; Usually in L colon (rectosigmoid); Benign

Answer 7

Hyperplastic polyp Hyperplasia of glands Cancerous = adenomatous polyp

Question 8

The most common metastasis for colorectal cancer is the:

Answer 8

liver