Anorectal DO

Question 1

What divides the rectal mucosa above from the squamous epithelium below?

Answer 1

Dentate line

Question 2

Below the dentate line is called?

Answer 2

Anoderm

Question 3

90% of anal fissures are?

Answer 3

Posterior

Question 4

What is the most common cause of painful rectal bleeding?

Answer 4

Anal fissure

Question 5

Most anorectal abscesses are located?

Answer 5

Posterior rectal wall

Question 6

What organisms typically cause anorectal abscesses and fistulas?

Answer 6

S. aureus, Bacteroides, Proteus, Strep

Question 7

Fistulas with an external opening ANTERIORLY tracks internally via a _____ line

Answer 7

Straight

Question 8

Fistulas with an external opening POSTERIORLY tracks internally via a _____ line

Answer 8

curved

Question 9

What is the most common anorectal problem in adults over 50?

Answer 9

Hemorrhoids

Question 10

Internal hemorrhoids are associated with veins ___ the dentate line

Answer 10

Above (this makes them PAINLESS!)

Question 11

External hemorrhoids are covered with ____ because they are below the dentate line

Answer 11

Andoderm (this means they are PAINFUL)

Question 12

What are a common cause of rectal bleeding?

Answer 12

Internal hemorrhoids

Question 13

Fluctuant mass with an erythematous “halo”

Answer 13

Pilonidal cyst

Question 14

What type of polyp is premalignant and is a precursor to colorectal cancer?

Answer 14

Adenomas

Question 15

Which type of adenoma is pedunculated and is the most common type of adenoma?

Answer 15

Tubular adenoma

Question 16

Which type of adenoma is sessile and has the gratest risk of cancer?

Answer 16

Villous adenoma

Question 17

Toxic megacolon is associated with patients who have?

Answer 17

Ulcerative colitis