Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Moderate - to - severe cardiomegaly is unchanged . The aorta is tortuous . Slight increase in interstitial markings compared to prior study which likely indicates mild interstitial pulmonary edema . No pleural effusions . No pneumothorax . No focal consolidation .
    OUTPUT:
    
Slight increase in interstitial markings compared to prior study likely indicates mild interstitial pulmonary edema . Moderate - to - severe cardiomegaly is unchanged .