Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are exceedingly low , resulting in crowding of the bronchovascular structures . There is a 2 .8 cm rounded opacity seen in the right mid lung zone , projecting over the posterior right seventh rib . The mass shows central areas of lower attenuation suggesting either air bronchograms or necrosis . Bibasilar opacities could reflect aspiration . No pleural effusion or pneumothorax . Heart is normal size . The mediastinal contours are unremarkable .
    OUTPUT:
    
1 . Rounded opacity in the right midlung zone . Further evaluation performed at full inspiration with a lateral view is recommended . 2 . Bibasilar patchy opacities could reflect aspiration or , provided low lung volumes , atelectasis .