Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low but not significantly changed compared with prior exam . There are diffusely increased interstitial markings , with some associated plate - like atelectasis in both bases . Blunting of the right costophrenic angle might be related to small pleural effusion with associated scarring , unchanged from prior . Streaky left base retrocardiac opacity may represent atelectasis . Cardiomediastinal contour is unchanged . The aorta is tortuous with severe atheorsclerotic calcifications . Diffuse osteopenia is re-demonstrated . Degenerative changes of both shoulder joints are again seen .
    OUTPUT:
    
Findings compatible with interstitial pulmonary edema with possible left base atelectasis .