Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest demonstrates low lung volumes without pleural effusion , focal consolidation or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size top normal . Prominent perihilar vascular congestion is noted . Prominent interstitial markings are noted with scattered focal opacities . Sternotomy wires appear intact . Surgical changes related to CABG are noted .
    OUTPUT:
    
Prominent interstitial markings , likely reflect pulmonary edema with possible superimposed infection . Underlying interstitial lung disease may also be present .