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Flashcards in Esophagus Deck (24):
1

esophagus sites dorsal/ventral to the trachea

dorsal

2

T/F the esophagus is normally not visible on survey radiographs

True

3

what dis

tracheoesophageal stripe sign

4

T/F fluid often accumulates in esophagus in L lateral view 

true

5

T/F esophagram is valuable for assessing esophageal function and structure 

True

assessing function requires dynamic evaluation - easy and safe

6

indication for esophagram 

regurgitation (vs. vomitting)

dysphagia

surbey radiographic findings

7

T/F a scope is better with esophagitis than esophagram 

True

8

identify the structure labeled X

cricopharyngeal sphincter

9

identify the structure labeled A

normal deviation over dorsum of trachea

10

identify the structure labeled B

normal deviation at thoracic inlet in some dogs

11

what dis?

normal canine esophagram

12

what dis?

normal feline esophagram

13

cricopharyngeal dysfunction

failure of cricopharyngeal muscle to dilate

lack of synchrony of pharyngeal contraction and sphincter relaxation

unable to propel food from pharynx into esophagus

need dynamic study to Dx

14

T/F there can be normal radiographs with esophageal function if no dilation present

True

15

megaesophagus

esophageal dysfunction that lead to dilation

segmental vs. generalized

congenital vs. acquired

16

causes of congenital generalized megaesophagus

idiopathic (common)

17

causes of aquired generalized megaesophagus

idiopathic

anesthesia

myasthenia gravis (uncommon)

gastroesophageal obstruction (uncommon)

endocrinopathym (uncommon)

18

signs of generalized megaesophagus

tubular structure in lateral view, dorsal to trachea and caudal vena cava

trachea displaced ventrally 

converging "funnel" opacity in caudal thorax on VD 

19

causes of segmental megaesophagus

congenital - vascular ring anomaly (uncommon)

aquired - foreign body (common), structure (rare)

20

radiographic signs of segmental megaesophagus

focal mass effect or gas accumulation

trachea usually displaced ventrally if abnormality is cranial to heart base

midline opacity on VD view

21

vascular ring anomalies are more common in dogs/cats

dogs

22

vascular ring anomalies arise from 

aortic arch or subclavian abnormalities

23

T/F most vascular ring anomalies also have generalized megaesophagus 

True

negatively impacts prognosis

24

breeds predisposed to PRAA

german shepards

great dane

irish setter