Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is subtle increased opacity in the right lung base projecting over the heart on the lateral view . Though possibly atelectasis , aspiration and / or pneumonia are also possible in the appropriate clinical circumstance . Findings are new compared to multiple prior radiographs , though are of indeterminate age . The remainder of the lungs are clear . There is no pneumothorax . There is no pulmonary edema or pleural effusions . Cardiomediastinal and hilar contours are within normal limits . Rightward scoliosis of the mid thoracic spine is unchanged from prior , though remains severe .
    OUTPUT:
    
New subtle right middle lobe opacity , possible atelectasis , though aspiration or pneumonia should be considered in the appropriate clinical setting .