Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In the left mid lung zone , there is a 13 mm round opacity . In the right midlung zone , there is a similar 8 mm round opacity . These likely represent nipple shadows . The lungs are otherwise clear without consolidation or edema . There is a tiny left pleural effusion . No right pleural effusion is identified . There is no pneumothorax . The cardiomediastinal silhouette is normal . There are mild - to - moderate degenerative changes in the thoracic spine , similar to the prior exam from ___ . Old left rib fractures are noted . Surgical clips are noted in the mid upper abdomen .
    OUTPUT:
    
1 . Tiny left pleural effusion . No evidence of pneumonia . 2 . Bilateral rounded opacities are likely nipple shadows . A repeat radiograph with nipple markers is recommended to exclude pulmonary nodules .