Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are unchanged with stable rightward mediastinal shift . Tubular opacity projecting over the right hemithorax likely represents a structure extrinsic to the patient and severely limits assessment of the right lung . Likely stable bibasilar opacities with a right juxtaphrenic peak suggesting stable right lower lobe volume loss . No pneumothorax .
    OUTPUT:
    
Likely stable bibasilar opacities , but exam is severely limited by superimposition of external structures . Recommend repeat chest radiograph for more optimal evaluation .