Chapter 17: GIT- Congenital Abnorm- Ectopia

Question 1

Ectopic tissues (developmental rests) are common in the GI tract

T or F

Answer 1

True

Question 2

What is the most frequent site of
ectopic gastric mucosa ?

Answer 2

upper third of the esophagus, where it is referred to as an inlet patch.

Question 3

While generally asymptomatic, acid released by gastric mucosa within the esophagus
can result in what?

Answer 3

• dysphagia,
• esophagitis,
• Barrett esophagus,
• or, rarely, adenocarcinoma.

Question 4

Ectopic pancreatic tissue occurs less frequently and can be found where?

Answer 4

esophagus or stomach.

Question 5

Describe ectopic pancreatic tissue.

Answer 5

Like inlet patches, these nodules are most often asymptomatic but can produce damage and local
inflammation.

Question 6

When ectopic pancreatic tissue is present in the pylorus what will be the outcome?

Answer 6

inflammation and scarring may lead to obstruction.

Question 7

How can ectopic pancreatic tissue mimic invasive cancer?

Answer 7

Because the rests may be present within any layer of the
gastric wall, they can mimic invasive cancer.

Question 8

What is Gastric hereotopia?

Answer 8

small patches of ectopic
gastric mucosa in the small bowel or colon,maypresent with occult blood loss due to peptic
ulceration of adjacent mucosa.