Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . A subtle area of increased opacity is present in the right infrahilar region , with otherwise grossly clear lungs . There are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
Nonspecific patchy right infrahilar opacity , which may be due to patchy atelectasis , focal aspiration or an early focus of pneumonia . Short - term followup radiographs are suggested to assess for resolution .