Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Relatively linear opacity in the right midlung is similar compared to prior , potentially atelectasis . There is no focal consolidation worrisome for pneumonia . There is no effusion or edema . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Linear opacity in the right midlung , felt to be atelectasis . Otherwise , unremarkable chest x-ray without findings suspicious for pneumonia .