Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung opacity silhouettes the left heart border and is new since the prior CT of ___ . Multiple nodular opacities were present on the prior chest CT of ___ and represent known chronic lung disease . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal .
    OUTPUT:
    
Opacity silhouetting the left heart board could represent pneumonia in the correct clinical setting , however , given the patients underlying chronic lung disease worsening chronic lung disease is a possibility . Follow - up with radiographs to document resolution is recommended . Oblique radiographs could help better confirm the abnormality if that would change management .