resp diagnosis Flashcards
What can areas of increased soft tissue opacity superimposed over normal conchal pattern mean on a rad?
chronic rhinitis
nasal foreign body
What can areas of altered soft tissue opacity over areas of conchal destruction mean on rad?
- agressive conchal destruction
- Aspergillosis - checkerboard black and white
- Neoplasia - uniform opacity
What lesions can cause narrowing of the URT?
tracheal hypoplasia collapsing trachea thickened tracheal membrance submucosal haemorrhage neoplasia
What lesion can cause both narrowing and displacement of URT?
retropharyngeal lymphadenopathy
mediastinal mass
What measurement can you take to determine if there is any tracheal narrowing on a rad?
Tracheal diameter / thoracic inlet normal = 0.2 brachycephalic = 0.16 boxers = 0.07
What are the progressing appearances of lungs during disease progression on rads?
Bronchial
interstitial
Alveolar
Vascular
What is a bronchial pattern?
Mineralisation of bronchial walls
thickening of bronchial walls
increase diameter of bronchi (bronchiectasis)
What can cause a bronchial pattern?
bronchial mineralisation
allergic bronchitis
chronic bronchitis
peribronchial cuffing (1 st step of interstitial as outside of bronchi)
What can you see on an interstitial pattern?
pulmonary vessels
What are different ways to classify a interstitial pattern?
nodular
diffuse
localised
what can cause a nodular interstitial pattern?
metastatic neoplasia haematoma granuloma fluid filled bronchi abscess
what can cause a diffuse interstitial pattern?
poor radiograph old dog neoplasia pneumonia oedema
what can cause a localised interstitial pattern?
partial lung collapse haemorrhage embolism FB oedema parasite
What do you see on an alveolar pattern?
no air in alveoli
cant see pulmonary vessels
what can cause localised alveolar pattern/
bronchopneumonia oedema haemorrhage neoplasia lung collapse / atelectasis
what can cause diffuse alveolar pattern?
severe bronchopneumonia
severe oedema
near drowning
smoke inhalation