What percent of alimentary tract duplications are in the abdomen versus the thorax?

1.   ?    95% Abdomen
2.   ?    75% Abdomen
3.   ?    50% Abdomen
4.   ?    25% Abdomen

What percent of alimentary duplications are simple cysts that do not communicate with the normal intestinal tract?

1.   ?    95%
2.   ?    75%
3.   ?    50%
4.   ?    25%

All duplications possess at least ___ layers of smooth muscle, and are intimately attached to the adjacent portion of intestinal tract?

1.   ?    One layer
2.   ?    Two layers
3.   ?    Three layers

What distinguishes an intestinal duplication from a mesenteric cyst?

1.   ?    Mesenteric cyst has a thinner wall
2.   ?    Location of the mass
3.   ?    Timing of embryogenesis

What percent of intestinal duplications have heterotopic tissue present?

1.   ?    95%
2.   ?    75%
3.   ?    50%
4.   ?    25%

The lining of the duplication is always composed of some sort of ___?

1.   ?    Pseudostratified epithelium
2.   ?    Cuboidal epithelium
3.   ?    GI tract mucosa

When the duplication does not communicate the normal lumen, what is the fluid like within the cyst?

1.   ?    Acidic
2.   ?    Thin
3.   ?    Dark brown or yellow
4.   ?    Foul smelling

What is the average size of intestinal duplication cysts?

1.   ?    Less than 2 cm
2.   ?    2 - 4 cm
3.   ?    8 - 10 cm
4.   ?    Greater than 12 cm

At what age do intestinal duplications usually present?

1.   ?    33% in the first 2 years of life
2.   ?    50% in the first 2 years of life
3.   ?    66% in the first 2 years of life
4.   ?    90% in the first 2 years of life

T or F: upper GI contrast studies are usually not helpful for intestinal duplications, since there is often no communication with the normal lumen?

1.   ?    True
2.   ?    False

If the duplication is found in either the abdomen or chest, should the other body cavity be screened with ultrasound?

1.   ?    Yes
2.   ?    No

What are the typical CT findings with an enterogenous cyst?

1.   ?    Contrast enhancement inside the cyst
2.   ?    Contrast enhancement of the cyst wall
3.   ?    No contrast enhancement

Most gastric duplications are _____?

1.   ?    Solid
2.   ?    Mixed
3.   ?    Cystic

What is the treatment for duodenal duplications?

1.   ?    Partial excision is often necessary, with mucosal stripping
2.   ?    Complete excision is essential
3.   ?    Exteriorization is often necessary, via tube drainage

What is the most common presentation of intestinal duplication?

1.   ?    Painless mass
2.   ?    GI bleeding
3.   ?    Anemia
4.   ?    Abdominal pain

T or F: Most small bowel duplication can be treated via excision with end-to-end anastomosis.

1.   ?    True
2.   ?    False

Which is NOT a problem usually associated with colonic and rectal duplications?

1.   ?    Urethral and vaginal duplication
2.   ?    Spina bifida
3.   ?    Gastroschisis
4.   ?    Cloacal exstrophy

What is the location of thoracic intestinal duplications, and what is their shape?

1.   ?    Solid, posterior mediastinum
2.   ?    Cystic, middle mediastinum
3.   ?    Solid, middle mediastinum
4.   ?    Cystic, posterior mediastinum

What percentage of esophageal duplications will have heterotopic gastric mucosa?

1.   ?    10%
2.   ?    33%
3.   ?    50%
4.   ?    66%

T or F: Neurenteric abnormalities may be associated with a thoracic intestinal duplication and vertebral anomalies?

1.   ?    True
2.   ?    False

Which side is more common for thoracoabdominal duplications?

1.   ?    Right
2.   ?    Left
3.   ?    Equivalent