Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Increased bilateral interstitial opacities are present , with more consolidative processes in the right lung base partially obscuring the right hemidiaphragm margin and the left upper lung . The right basilar opacities appear worsened than in the previous studies . Blunting of the right posterior costophrenic sulcus in the lateral view suggests a small right sided pleural effusion . There is no left - sided pleural effusion . Mild cardiomegaly is stable . Otherwise , cardiomediastinal and hilar contours are unremarkable . There is no pneumothorax .
    OUTPUT:
    
Consolidative opacities in the right lung base and the upper left lung may represent infectious processes . If the clinical presentation is compatible with pneumonia , follow up is recommended ___ weeks after treatment to assess for resolution . However , if the presentation is not compatible with penumonia , further assessment with chest CT is recommended given progressive worsening of the right basilar and new left upper lung opacities .