Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The lung volumes are low , resulting in bronchovascular crowding . Bibasilar atelectasis is mild . What looks like a 2 .5 cm oval lung nodule or calcification on the lateral view , could be a pulmonary vein ; oblique views would clarify that . There is no pneumothorax , focal consolidation , or pleural effusion . Moderate degenerative changes are seen within the glenohumeral joints bilaterally .
    OUTPUT:
    
Very low lung volumes . No large consolidation or effusion detected . Oblique views would be required to exclude a pulmonary nodule .