Respiratory Radiology Flashcards
What are the findings of a normal chest xray?
normal bone markings with overlying soft tissue
heart
central vascular and airway markings
parenchyma and air
Which pattern of pneumonia shows a “tree-in-bud” pattern?
bronchopneumonia
Which pattern of pneumonia shows a lobar delineation?
What will you see on pathology?
lobar pneumonia
Red hepatization
What pathogen causes a bulging fissure?
Klebsiella
Which bacteria are more likely to cause a lobar pneumonia?
S. Pneumoniae
S. Aureus
Gram -
Which bacteria are more likely to cause abscess?
(often seen with lobar PNA)
Klebsiella
S. aureus
Anaerobes
Which disease shows an abnormal dilatation and extension of airway spaces into peripheral fields?
Bronchiectasis
what is the diagnosis in someone with situs inversus with dextrocardia?
primary ciliary dyskinesia
(Kartagener syndrome)
What causes Bat Wing infiltrates?
Pulmonary edema (hydrostatic-2’ to HF)
Pneumonias (viral)
HSN pneumonitis
Inhalation injury
Anything favoring (proximal or distal) vascular or airway involvement will cause Bat Wing infiltrates?
Proximal
Anything favoring (central or peripheral) involvement leads to Reverse Bat Wing?
What specific condition can cause reverse bat wing?
Peripheral
Interstitial Pulmonary Fibrosis/Sarcoidosis
Why does HSN pneumonitis cause bat-wing on xray?
Why does Sarcoidosis cause reverse bat-wing on xray?
Because it follows airways
Because it follows lymphatics
What conditions cause White Out?
ARDS (most common)
Severe pneumonia
Severe Atelectasis
Diffuse hemorrhage
Malignancy
Histoplasmosis shows what kind of nodularity?
diffuse or laminated
Hamartomas show what type of nodularity?
popcorn