Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ill - defined , large opacity in the left upper - mid lung is concerning for pneumonia . Larger and more dense opacity in the left lower lung is likely a combination of moderate effusion and atelectasis and / or consolidation . Right lung is clear . Pleural effusion if any is minimal on the right side .
    OUTPUT:
    
Large left upper - mid lung consolidation , in view of clinical history is worrisome for pneumonia . More homogeneous and dense left lower lung opacity is combination of effusion and atelectasis and / or consolidation .