Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . There is no pleural effusion or pneumothorax . There is no evidence pulmonary edema . In the right infrahilar region , a vague opacity is present , which in the appropriate clinical context , may represent pneumonia .
    OUTPUT:
    
Right infrahilar opacity may represent pneumonia in the appropriate clinical context .