Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is diffuse increased interstitial markings . There multiple small patchy opacities in the right lung with a large confluent opacity in the right lower lobe . The bones are diffusely demineralized . Patient is status post posterior fusion with pedicle screws and rods in the thoracic spine . Evaluation of perihardware lucency and fracture is limited due to low bone density . Vascular stents are seen in the left upper chest and axilla . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Pulmonary edema and possible right lower lobe pneumonia .