Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is the left subclavian PICC line , with tip over cavoatrial junction . No pneumothorax detected . The cardiomediastinal silhouette is unchanged . Also again seen are scattered patchy opacities in both lungs , prior study . A small , slightly more confluent focus is now seen in the midclavicular line on the left , adjacent to the left third anterior rib . No gross consolidation or effusion is identified .
    OUTPUT:
    
Scattered patchy opacities in both lungs , overall similar to the prior study . Most likely etiology or multifocal pneumonic infiltrates . Patchy initial development of CHF could have a similar appearance , but is considered less likely .