Assertion: small pneumothorax | /r/HasProperty | difficult to see
Facets:
Source sentences:
text: A chest x-ray is the test of choice: small pneumothorax (less than 20% of hemithorax) may be difficult to see on chest x-ray; and a film taken during expiration it may help visualise it.
text: Small pneumothoraxes can be difficult to see on the CXR, especially if you aren’t looking for them!