Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . There is an area of slight increased opacity in the right lung base on the frontal view , which may be due to overlying structures ; although , early consolidation is difficult to exclude . There is stable mild cardiomegaly . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Slight increased opacity in right lung base may be due to overlying structures ; although , early consolidation can not be excluded .