What are the findings of a normal chest xray?
normal bone markings with overlying soft tissue
central vascular and airway markings
parenchyma and air
Which pattern of pneumonia shows a "tree-in-bud" pattern?
Which pattern of pneumonia shows a lobar delineation?
What will you see on pathology?
What pathogen causes a bulging fissure?
Which bacteria are more likely to cause a lobar pneumonia?
Which bacteria are more likely to cause abscess?
(often seen with lobar PNA)
Which disease shows an abnormal dilatation and extension of airway spaces into peripheral fields?
what is the diagnosis in someone with situs inversus with dextrocardia?
primary ciliary dyskinesia
What causes Bat Wing infiltrates?
Pulmonary edema (hydrostatic-2' to HF)
Anything favoring (proximal or distal) vascular or airway involvement will cause Bat Wing infiltrates?
Anything favoring (central or peripheral) involvement leads to Reverse Bat Wing?
What specific condition can cause reverse bat wing?
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)
Histoplasmosis shows what kind of nodularity?
diffuse or laminated
Hamartomas show what type of nodularity?
If you see a laminated, diffuse nodule on XR, what is likely?
What are the two charcteristics to look for if worried about malignancy?
what specific factors should be considered when deciding if a lesion should be biopsied?
lack of calcification
What malignancies can look like pneumonia and be bilateral?
adenocarcinoma in situ
What malignancy has a ground glass appearance?
adenocarcinoma in situ
What malignancy has bubble lucencies?
What malignancy shows cavitation?
squamous cell carcinoma
What causes wedge-shaped atelectasis?
Resorption (which is from an obstruction)
obstruction can be foriegn body, mucus, tumor
What cancers may cause wedge-shaped atelectasis?
A patient will have a more obvious tension PTX on XR when (inhaling or exhaling) ?
A primary PTX is due to a limited introduction of air into which space?
usually due to 1' lung pathology
tension PTX us due to what?
"one-way" unchecked accumulation of air
usually from chest wall trauma
causes mass effect with midline shift
Alveolar processes are more likely to show what?
ground glass or diffuse "white out"