Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , limiting assessment . Within the limitations , there is no focal airspace opacity or pulmonary edema . There is a possible small right pleural effusion . There is no definite left pleural effusion . There is no pneumothorax . The cardiomediastinal silhouette is normal . A pacemaker / ICD overlies the left chest with the leads overlying the expected location of the right atrium and the right ventricle . Sternotomy wires are intact . Surgical clips are noted in the right upper quadrant , likely from a prior cholecystectomy . The right hemidiaphragm is elevated in comparison to the left .
    OUTPUT:
    
1 . Possible small right pleural effusion . 2 . No focal airspace opacity to suggest pneumonia , though the exam is limited by low lung volumes .