Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to plain film from ___ and chest CT from ___ . New compared to prior , however , is a left basilar opacity which silhouettes the hemidiaphragm , potentially related to interval development of pneumonia . There is a possible underlying effusion and left upper lung region of consolidation again seen . Surgical chain sutures project over left upper lobe . Right lung is essentially clear . Cardiomediastinal silhouette is unchanged . Hypertrophic changes in the spine and likely post-surgical changes seen at the right acromion and right humeral head .
    OUTPUT:
    
Interval development of retrocardiac opacity silhouetting the hemidiaphragm suspicious for pneumonia in the proper clinical setting . Underlying effusion and component of atelectasis is also possible . Left upper lobe region of consolidation is again seen as well .