CXR

Question 1

What does a cavitation lung lesion suggest?

Answer 1

SAW TRAP
Squamous cell lung cancer, abscess, wegener’s granulomatosis, tuberculosis, rheumatoid arthritis, aspergillosis (histoplasmosis, coccidiodomycosis), pulmonary embolism.

Question 2

What can cause lobar collapse?

Answer 2

lung cancer, Asthma (mucus plugging), foreign body

Question 3

Signs of lobar collapse?

Answer 3

Tracheal deviation towards the side of collapse
Mediastinal shift towards side of collapse
Elevation of hemidiaphragm

Question 4

How does lung metastasis present?

Answer 4

Cannonballs- multiple round well-defined lung secondaries. Most commonly seen with renal cancer but can also occur due to choriocarcinoma and prostate cancer.

Calcification in lung metastasis only occurs with chrondrosarcoma or osteosarcoma.

Question 5

What causes mediastinal widening?

Answer 5

Retrosternal goitre, teratoma, thymoma, lymphoma, vascular problems thoracic aorta aneurysm

Question 6

What does pulmonary oedema look like on an CXR?

Answer 6

Interstitial oedema, bat wing appearance, upper lobe diversion, pleural effusion, kerley b lines, cardiomegaly

Question 7

When would the trachea be pushed away from a white out?

Answer 7

Pleural effusion, mass, diaphragmatic hernia

Question 8

When would tranche be pulled in towards a white out?

Answer 8

Pneumonectomy, complete lung collapse, pulmonary hypoplasia

Question 9

Central trachea and white out?

Answer 9

Pulmonary oedema, consolidation, mesothelioma

Question 10

How would pleural effusion show on CXR?

Answer 10

Blunting of costophrenic angle, fluid in fissures, meniscus in larger effusions, trachea and mediastinal deviation if massive effusion.