Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Since the prior study , there is now increased density projecting over the anterior right fourth , fifth , sixth , and seventh ribs . Findings most likely represent old fractures , although recommend correlation with history of trauma or malignancy and consider oblique views to further evaluate . There are atelectatic changes of the left lung base . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Increased density projecting over the anterior right fourth through seventh ribs , new since the prior study from ___ ; most likely represent old rib fractures , however recommend correlation with history of trauma or malignancy . Oblique views would help to further evaluate . No definite focal consolidation .