Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Streaky right basilar and left mid lung opacities are seen , which may be due to atelectasis . No definite correlate finding seen in the lateral view , noting that the patient 's arms project over the upper half of the chest . There is blunting of the right posterior costophrenic angle compatible with trace effusion . The cardiomediastinal silhouette is within normal limits . No definite acute osseous abnormality is identified noting degenerative changes at the acromioclavicular joints and left glenohumeral joint .
    OUTPUT:
    
Relatively linear left mid lung and right basilar opacities , potentially due to atelectasis , infection is not entirely excluded .