31: Lung Radiology

Question 1

What is tree in bud usually?

Answer 1

Bronchopneumonia

Question 2

2-3 things that cause batwing vs reverse batwing pattern

Answer 2

1. Batwing: pulmonary edema, hypersensitivity pneumonitis, inhalation injury
2. Reverse batwing: ILDs, sarcoid

Question 3

Things that can cause bilateral white out on CXR

Answer 3

1. ARDS
2. Severe PNA
3. Severe atelectasis
4. Diffuse hemorrhage

Question 4

What makes pulmonary nodules so white?

Answer 4

Calcium

Question 5

What can mucinous adenocarcinoma look like on CXR?

Answer 5

PNA

Question 6

Five things that can look like ground glass opacities in the lungs

Answer 6

1. Infection
2. ILD
3. Edema
4. Hemorrhage
5. Neoplasm

Question 7

Wedge shaped white patch on CXR could be what two things

Answer 7

Resorption atelectasis, infarct

Question 8

Why do you want pt to exhale when taking a CXR when suspecting a tension pneumothorax?

Answer 8

thoracic cavity shrinks down, but the air trapped inside is fixed volume -> will be more dramatic