Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are low lung volumes . On the lateral view , the patient 's arm overlies part of the chest , making the evaluation suboptimal . Given the above , there is prominence of the hila which may be due to pulmonary edema . Left base retrocardiac opacity is seen , which could relate to prominent vasculature or underlying atelectasis ; however , underlying infection or aspiration not excluded . No large pleural effusion is seen , although trace pleural effusions are difficult to exclude . The cardiac silhouette is top normal . The aortic knob was calcified . Degenerative changes are seen in the shoulder joints which are high riding , seen in rotator cuff disease .
    OUTPUT:
    
Low lung volumes limit assessment ; however , there appears to be prominence of the hila concerning for pulmonary edema . Retrocardiac left base opacity could relate to prominent vasculature ; however , underlying atelectasis or consolidation not excluded .