Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exam from ___ . Since prior , there has been development of a left basilar opacity seen laterally . Superiorly , the lungs are clear . Cardiomediastinal silhouette is within normal limits for technique . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Left basilar opacity which may represent pneumonia in the proper clinical setting . Repeat after treatment is recommended to document resolution .