Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate fairly well aerated lungs and a mildly enlarged cardiac silhouette . No focal consolidation is identified , but there is increased perihilar opacity , which could represent a viral or small airways process , or mild vascular congestion . No pleural effusion or pneumothorax is present . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . Increased perihilar opacity , which could represent a viral or small airways process , or mild vascular congestion . No focal consolidation to suggest bacterial pneumonia identified . 2 . Mildly enlarged cardiac silhouette .