Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . There is a linear opacity at the left mid lung zone as well as the right mid lung zone with obliteration of the right heart border and downward movement of the right hilus . There is no pleural effusion or pneumothorax . Osseous structures are unremarkable .
    OUTPUT:
    
Right middle lobe collapse and left lower lobe superior segment collapse . CT may be obtained to better clarify the condition of the airways , or patient may be empirically treated with bronchodilators and antibiotics . Repeat chest radiographs should be obtained in no more than four weeks to document course .