Assertion: mediastinum's structure | /r/HasProperty | difficult to visualize
Facets:
value: because of the overlying aerated lung
type: CAUSE
Source sentences:
text: Alternatively, endoscopic ultrasonography can be used to evaluate mediastinal structures that may be difficult to visualize transcutaneously because of the overlying aerated lung.
text: Alternatively, endoscopic ultrasonography can be used to evaluate mediastinal structures that may be difficult to visualize transcutaneously because of the overlying aerated lung.