ch.14 slide 110-123

Question 1

what is a polyp?

Answer 1

mass that protrudes into lumen- epithelial or mucosal proliferation

Question 2

types of polyps?

Answer 2

pedunculated or sessile

Question 3

characteristics of polyps?

Answer 3

1. inflammatory
2. hamartomas
3. hyperplastic MC in elderly
   4 adenomatous

Question 4

are adenoma hereditary? how common are they?

Answer 4

yes. 4x risk for familial

50% of all U.S. adults >50 yr old

Question 5

familial adenomatous polyposis is??

Answer 5

a rare autosomal dom., aggressive & numerous adenomas

• genetic mutation APC gene (chrom 5)
• 100% of ca, MC by age 30

Question 6

Tx of familial adenomatous polyposis?

Answer 6

prophylactic colectomy

Question 7

types of colon tumors?

Answer 7

adenocarcinomas

carcinoid tumors

Question 8

MC colon tumors? what % is lethal?

Answer 8

Carcinoma of epithelial tissue
40% is lethal
5% of U.S. pop. develops colorectal CA

Question 9

what is the MC malignancy of GI tract?

Answer 9

colorectal adenocarcinoma

Question 10

risks for colorectal adenocarcinoma?

Answer 10

Male; 50-70 yr olds; IBD; Developed nations

highly processed foods Inc by 30x

Question 11

food risks for colorectal adenocarcinoma?

Answer 11

low fiber
refined carbs
high fat
dec. antioxidants

Question 12

where does colorectal adenocarcinomas mets to?

Answer 12

regional lymphatic’s & hematopoietic

MC liver, lymph nodes, lungs, bone marrow

Question 13

neoplasms of SI occur MC where? how often?

Answer 13

Duodenum
very rare: 3-6% of GI tumors
1% of GI malignancies

Question 14

acute appendicitis is? how common?

Answer 14

MC acute abdominal condition
consists of RLQ tenderness
anorexia, nausea, vomiting, pyrexia
- 7% of U.S. pop.

Question 15

who is at risk for appendicitis?

Answer 15

males 1.5x, 20-40 yrs. old