Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . There is a patchy opacity involving the right lower lung field with obscuration of the right heart border . Discoid atelectasdis is noted in the left lower lobe . There is mild cardiomegaly , but the cardiomediastinal contour is unremarkable otherwise . No pleural effusion or pneumothorax .
    OUTPUT:
    
Patchy opacity obscuring the right heart border suggests right middle lobe pneumonia . Repeat after treatment recommended to document resolution .