Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is re- demonstrated . Mediastinal and hilar contours are relatively unchanged with diffuse atherosclerotic calcification of the thoracic aorta again noted . There is no pulmonary vascular congestion . Focal patchy opacity is noted projecting over the left ___ anterior rib end , not clearly seen on the prior study . Remainder of the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Focal patchy opacity projecting over the anterior aspect of the left 3rd rib end , concerning for an area of developing infection .