Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with flattening of the bilateral hemidiaphragms compatible with COPD . There is prominence of the right perihilar region . Opacification of the right medial lung base corresponds to opacification of the cardiac silhouette on the corresponding lateral view . No significant pleural effusion or pneumothorax is present . There is no overt pulmonary edema . The cardiac silhouette is mildly enlarged . The mediastinal contours are prominent , due in part to unfolding and tortuosity of the thoracic aorta . Calcification of the aortic arch is noted . The trachea is midline . There is no free air beneath the right hemidiaphragm . There are compression fracture deformities of the mid thoracic spine and generalized loss of height of the thoracic vertebral bodies with multilevel degenerative changes .
    OUTPUT:
    
Probable right middle lobe pneumonia or , less likely , collapse in the setting of background COPD . Followup is recommended in ___ weeks following an appropriate course of treatment to confirm resolution .