Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low resulting in prominence and crowding of the vascular markings . There is atelectasis in the right upper lobe and probable underlying scarring . There is no pleural effusion , pulmonary edema , or pneumothorax . Moderate enlargement of the cardiac silhouette is unchanged .
    OUTPUT:
    
1 . Right upper lobe atelectasis . 2 . Low lung volumes with associated crowding of the vascular markings . 3 . Stable moderate cardiomegaly .