Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Mild haziness overlying the lower thoracic spine on the lateral view is difficult to localize on the frontal radiograph . There is a small right pleural effusion . There is left no pleural effusion . There is no pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Hazy opacity overlying the lower thoracic spine on the lateral view is difficult to localize on the frontal radiograph , but may represent infection in the appropriate clinical setting .