Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . The previously described ill - defined opacity projecting over the right anterior third rib is not clearly appreciated on today 's exam and may previously have been the results of superimposition of normal structures . Otherwise , no significant interval change from the prior exam . No focal consolidation , edema , or pneumothorax . The heart remains top - normal in size . Mediastinum is not widened . A broad - based , right lower thoracic wall pleural abnormality in the region of the right seventh posterior rib with slight asymmetric appearance of the soft tissue on the right compared to the left is overall unchanged . No definite evidence of underlying rib fracture . Dextroconvex scoliosis of the upper thoracic spine is mild , overall unchanged .
    OUTPUT:
    
1 . Persistent right pleural - based abnormality with associated slightly asymmetric appearance of the overlying soft tissue in the right chest cage is of uncertain etiology . Non-emergent chest CT is recommended to further evaluate . 2 . No focal pneumonia or pneumothorax .