Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is a prominent interstitial pattern throughout the lungs which could represent mild edema or an atypical pneumonia . No large pleural effusion or pneumothorax is seen . The cardiomediastinal silhouette appears stable and within normal limits . The bony structures are intact .
    OUTPUT:
    
Prominent interstitial pattern throughout the lungs could represent mild pulmonary edema or an atypical pneumonia . Findings appear similar to prior exam from ___ though new from exam dated ___ .