Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is present with left atrial prominence . Mediastinal contour is unremarkable , and the pulmonary vasculature is not engorged . Low lung volumes are present with minimal atelectasis in the lung bases , but no focal consolidation . No pleural effusion or pneumothorax is present . Elevation of the right hemidiaphragm is of unknown chronicity . Degenerative changes are noted involving both glenohumeral joints .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Elevation of the right hemidiaphragm of unknown chronicity .