Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the lateral view , there is some increased opacity projecting over the lower spine , not well substantiated on the frontal view . Findings may be due to atelectasis although infectious process is not excluded in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . There is no pulmonary edema .
    OUTPUT:
    
On the lateral view , there is some increased opacity projecting over the lower spine , not well substantiated on the frontal view . Findings may be due to atelectasis although infectious process is not excluded in the appropriate clinical setting .