Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate elevation of the right hemidiaphragm and volume loss of the right upper lobe consistent with prior right upper lobectomy . Increase in airspace opacity in the right mid lung field as compared to the prior study may represent a developing infection , or atelectasis and scarring . The cardiac size and mediastinal contour is normal and there is no pleural effusion or pneumothorax . The left lung is clear . Heterogeneity of the bones is in keeping with diffuse osseous metastases .
    OUTPUT:
    
Interval increase in airspace opacity in the right mid lung zone could be due to developing infection , however may represent atelectasis and scarring . Followup radiograph is recommended after treatment .