Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a confluent opacity in the left perihilar region concerning for pneumonia . Additionally , there is vague increased opacity throughout both lungs which likely reflects the presence of multifocal pneumonia less likely edema . Small bilateral pleural effusions are present . Cardiomediastinal silhouette is likely stable allowing for some technical differences . No pneumothorax . Bony structures appear intact .
    OUTPUT:
    
Multifocal pneumonia most confluent in the left perihilar region with small bilateral pleural effusions . A component of edema is difficult to exclude .