Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Slight increased opacity in the right mid lung with air bronchogram is most likely due to atelectasis and / or overlap of vascular structures , but in appropriate clinical setting early pneumonia can not be excluded . Left lung is clear . Cardiomediastinal and hilar contours are normal . There are no pleural effusions .
    OUTPUT:
    
Right mid lung opacity is likely atelectasis , however early pneumonia can not be excluded in appropriate clinical setting .