Thoracic Wall & Diaphragm

Question 1

This is a musculotendinous partition and a major muscle

contributor to respiration

Answer 1

Diaphragm

Question 2

The large surface area of the Diaphragm assists in

________ ________ of the abdomen

Answer 2

lymphatic drainage

Question 3

Where does the Diaphragm attach?

Answer 3

Ventral aspect of L3-4

Question 4

Which 6 things pass through the Diaphragm?

Answer 4

Aorta

Azygous veins

Esophagus

Vena Cava

Thoracic Duct

Nerves

(AVENTA)

Question 5

T/F:

The Diaphragm is easily visualized on radiography

Answer 5

FALSE

To be detected, an adjacent structure must provide contrast

Question 6

Why is the ventral Diaphragm more commonly detected?

Answer 6

It is adjacent to the falciform ligament

Question 7

In which view would you see the CVC entering the

more cranial crus?

Answer 7

RIGHT lateral view

Question 8

Crura appear divergent in which radiographical view?

Answer 8

LEFT lateral view

Question 9

In which view can you see up to 3 dome-shaped structures

associated with the diaphragm?

Answer 9

VD (ventrodorsal) view!

(only see 1 in DV)

Question 10

This occurs when abdominal viscera protrudes through the

Diaphragm

Answer 10

Hernia

Question 11

The most common cause of diaphragmatic hernias

Answer 11

TRAUMA

Question 12

A cat that has been HBC is experiencing

Dyspnea, abdominal pain, vomiting, regurgitation heart sounds

that are muffled, and a weak femoral pulse.

What is the most likely cause?

Answer 12

Traumatic Diaphragmatic hernia

Question 13

This is occurring when a portion of the stomach enters the thorax

through the esophageal hiatus

Answer 13

Hiatal hernia

Question 14

Hiatal hernias often manifest in patients with

this condition

Answer 14

Partial Upper Airway Obstruction

Question 15

Which view are you most likely to see a hiatal hernia in?

Answer 15

LEFT lateral

Question 16

A round cardiac silhouette with heterogeneous opacity

along with silhouetting of the heart and diaphragm

is indicative of this kind of hernia, which is often

an incidental finding

Answer 16

Congenital diaphragmatic hernia:

Peritoneopericardial Diaphragmatic Hernia (PPDH)

Question 17

With diaphragmatic hernias, you may see

displacement of _______ and _______ structures

along with pleural fluid

Answer 17

abdominal and thoracic

Question 18

After the thoracic wall is mineralized, where are you most

likely to see large calcifications, which are

often mistaken for tumors or lung nodules?

Answer 18

Costochondral junction

Question 19

T/F:

Mineralization of the cartilagenous part of the thoracic wall

is a normal aging change, seen in very young dogs

Answer 19

TRUE

Question 20

This congenital abnormality is described as

mild to severe displacement of the caudal sternebrae

Answer 20

Pectus Excavatum

Question 21

What radiographic features would you expect to see in an animal

with Pectus Excavatum?

Answer 21

Reduced size of thoracic cavity

Displacement of the heart