Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . AICD is unchanged with leads extending to the region the right atrium right ventricle . The subtle opacity seen on earlier exam in the right mid to lower lung is less conspicuous and overall lung volumes are improved . Therefore , findings most likely attributable to atelectasis . On the current exam , there is no convincing evidence for pneumonia . No pleural effusion or pneumothorax . No convincing signs of edema . Cardiomediastinal silhouette unchanged . Bony structures are intact .
    OUTPUT:
    
Improved lung volumes with decrease conspicuity of right lower lung opacity , therefore , findings more compatible with atelectasis .