Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Frontal view excludes the right CP angle limiting assessment . There is improved aeration at the right lung base with probable mild residual pleural thickening versus tiny effusion . Otherwise , lungs are clear . No large pneumothorax . No signs of pulmonary edema . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Minimal residual pleural thickening versus tiny effusion at the right lung base . Right CP angle partially excluded .