Dunedin- Radiology Flashcards
What is Fleischner’s sign? Westermark’s sign? Hamptoms hump?
Pulmonary artery enlarged by clot
decreased regional perfusion in PE
Lung infarct
Describe inhalation patterns on CXR
Allergen –> diffuse
Gas –> upper
Silicosis –> diffuse
asbestosis –> lower
How does silicosis with progressive massive fibrosis appear on imaging?
Perihilar and contracted fibrosis
How does bird fancier appear on CXR
diffuse non-specific changes, can get bronchiolitis
Which malignancy looks like non-resolving pneumonia on CXR?
bronchoalveolar cell carcinoma/adenocarcinoma in situ
Which malignancy shows Kerry B lines (interlobular septal thickening) on CXR?
Lymphangitis carcinomatosa
Describe TB location on CXR
Upper lobe or apical segment of lower lobe
What does ‘finger in glove’ bronchial thickening suggest?
Aspergillosis
Mid and upper lobe
What does peribronchial granulomatosis refer to?
Sarcoidosis
usually has large hilarious lymphadenopathy initially
How to determine pulmonary fibrosis based on location?
Upper: Sarcoid, Tb, radiation
Lower: Aspiration
Subpleural - peripheral: Fibrosing alveolitis
Diffuse: Connective tissue
What is cryptogenic organising pneumonitis (COP)
AKA bronchiolitis obliterates organising pneumonia
often end result of other resp conditions
What are the main features of RA?
corner erosion
loss of join space width
What are the main features of osteoarthritis?
Joint space loss, sclerosis, osteophytes
What is a typical knee x-ray of CPPD?
patellofemoral joint affected however femoral joint not affected
Where in gout can urate deposit?
Inside capsule
outside capsule
In bone
What causes an isolated DIP joint?
Regular OA (seagull deformity)
erosive OA
Psoriasis (pencil in cup)
What are some radiological findings in Psoriasis
- Syndesmophyte
- pencil in cup joint
- manubrio-sternal and SIJ update
What is some radiological features of ank spondylitis?
What are radiological characteristics of Pagets disease?
dense, coarse trabecular, wide cortex
in long bone- goes to one end
What causes epidural/extradural haemorrhage?
torn middle meningeal artery, often with a scalp fracture
causes lentiform/crescenteric shaped
Subarachnoid haemorrhage on CT
Imaging of dense middle cerebral artery sign –> L parietal infarct
In CT, which IV contrast is used?
iodine compounds
In MRI, which sequence best identified MS demyelinating plaques?
Flair
What does imaging of lateral medullary syndrome show?
Infarction of L side of brainstem and cerebella
obstruction of L.PICA
In abdo CT, Para-aortic lymphadenopathy is most suggestive of?
Lymphoma
what is the signet ring sign?
bronchiectasis
On HRCT, tree in bud suggests?
Infection
What does Pagets disease look like on PET?
HOT
goes to the ends of the long bone
affects all vertebral appendages
Kilroy sign
