Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is blunting of the left costophrenic angle . The left hemidiaphragm appears mildly elevated and there is subtle patchy left basilar opacity . The right lung is clear . There is no evidence of pneumothorax . The cardiac silhouette is top - normal . The mediastinal contours are grossly unremarkable . No evidence of free air is seen beneath the diaphragms .
    OUTPUT:
    
Blunting of the left costophrenic angle with left basilar opacity likely relates to a small left pleural effusion with overlying atelectasis , underlying consolidation not excluded . No evidence of free air beneath the diaphragms .