Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is enlarged . The mediastinal and hilar contours are normal . The pulmonary vasculature is minimally engorged . Lung volumes are slightly low which accentuate bronchovascular markings . Given that , there is subtle opacity at the base of the right lung which could represent atelectasis or infection in the appropriate clinical setting . No pleural effusion or pneumothorax is seen . The is made of some sclerosis in the left humeral head .
    OUTPUT:
    
Slightly low lung volumes . Subtle opacity at the base of the right lung could represent atelectasis however infection should be considered in the appropriate clinical setting . Recommend followup chest radiograph for further evaluation if clinically indicated .