Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including moderate unfolding and calcification along the thoracic aorta . The heart is normal in size . There is a new right lateral pleural thickening with a lenticular configuration , as well as mixed patchy opacification and lucency overlying adjacent lung parenchyma of uncertain etiology . This lucency may be artifactual but differential considerations include air in a cavity , atelectasis , or subtle infection associated with pleural thickening . Elsewhere , the lungs appear clear . Degenerative changes are similar along the thoracic spine .
    OUTPUT:
    
New right lateral pleural thickening and a vague streaky focal lucency in the right lower lung of uncertain etiology but subtle evidence for air within a cavity is a differential consideration . Depending on the acuity of findings , chest CT is suggested versus short - term radiographic follow - up is suggested . Correlation with whether there may have been any intercurrent illness with a pleural effusion is also suggested .