Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show increased opacification at the right lung base obscuring the right heart border , best appreciated on the corresponding lateral radiograph representing right middle lobe collapse . Linear opacities at the left lung base are new from the preceding radiographs and most likely represent atelectasis in the absence of clinical findings to suggest infection . No pleural effusion or pneumothorax is present . The pulmonary vasculature is not engorged . The cardiomediastinal silhouette is within normal limits and probably unchanged from the ___ radiograph , although the heart borders are obscured by adjacent opacities .
    OUTPUT:
    
Right middle lobe collapse and atelectasis at the left lung base secondary to asthma , less likely pneumonia or other infection . Findings were communicated by Dr . ___ to Dr . ___ by phone at 17 :00 p .m . on ___ .