Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged from prior exam . Cardiomediastinal silhouette and hilar contours are stable . Patchy opacifications at the left lung base may be due to atelectasis however infection can not be excluded . The right lung is clear . There is no pleural effusion or pneumothorax . An implanted device projects over the AP window . Again appreciated are old fractures of the posterior left ___ and 8th ribs .
    OUTPUT:
    
Patchy opacities at the lung base which may be due to atelectasis , however infection can not be excluded . Results were discussed over the telephone with Dr . ___ by Dr . ___ ___ at 13 : 43 on ___ at time of initial review .