<num>. bibasilar opacities most likely relate to atelectasis in this patient with low lung volumes and mildly elevated right hemidiaphragm, however, underlying infection or aspiration is not excluded in the appropriate clinical setting. <num>. prominence of the central pulmonary vasculature may suggest mild pulmonary edema which may be in part accentuated by low lung volumes. <num>. possible trace right pleural effusion.