CXR

Question 1

lobar collapse on CXR

Answer 1

trachea + mediastinum deviated towards

elevated hemidiaphragm

Question 2

how do the middle + lower lobe look if upper lobe collapsed?

Answer 2

may be hyperextended - to fill the space left behind by the collapse - appear more black

Question 3

common causes of lobar collapse

Answer 3

lung cancer
asthma (mucuous plugging)
foreign body

Question 4

what are the differentials for white shadowing in the lungs?

Answer 4

consolidation (tissue filled with fluid instead of air - PO, inflam exudate, pus, inhaled water, blood from bronchial tree or haemorrhage from pulmonary artery)
pleural effusion
collapse
pneumonectomy
tumours

Question 5

differentials for white-out of hemithorax

Answer 5

trachea towards - pneumonectomy, complete collapse, hypoplasia

trachea central - consolidation, pulmonary oedema, mesothelioma

trachea away - effusion, diaphragmatic hernia, large mass