Lung Pattern Radiography

Question 1

What are the four lung patterns?

Answer 1

Alveolar
Interstitial
Bronchiolar
Vascular

Question 2

What does alveolar pattern look like?

Answer 2

Soft tissue opacity wash out
Can look fluffy
Border obliteration of heart
Air bronchograms present

Question 3

Why does alveolar pattern occur?

Answer 3

Fluid/cells in alveoli
Air still in bronchioles

Question 4

Causes of alveolar pattern

Answer 4

Pulmonary oedema
Haemorrhage
Pneumonia

Question 5

What does interstitial pattern look like?

Answer 5

Lungs still filled with air with hazy fog of grey
Smudged vasculature
Can still see cardiac silhouette

Question 6

Causes of interstitial pattern

Answer 6

Artefact from under exposure or exhalation
Interstitial pulmonary oedema
Haemorrhage
Pulmonary fibrosis
Neoplasia

Question 7

What does bronchiolar pattern look like?

Answer 7

Super bright tramlines/donuts

Question 8

Why does bronchiolar pattern occur?

Answer 8

Thickening and increased prominence of bronchial walls
Usually secondary to chronic inflammation

Question 9

Causes of bronchiolar pattern

Answer 9

Chronic bronchitis
Feline asthma
Eosinophilic lung disease

Question 10

What is vascular pattern?

Answer 10

Always present
Can be emphasised by Heart/lung worm
D imitis/A vasorum

Question 11

How many lobes does each lung have?

Answer 11

Right - 4 (RCr, RM, RCd, RA)
Left - 2 (LCr, LCd)