Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The exam is essentially nondiagnostic due to underpenetration from presumed patient body habitus . Grossly , the cardiomediastinal silhouette appears stable as compared to ___ . Midline tracheotomy is again seen . The right lung is less area as compared to the left which may be due to underlying atelectasis . Patchy right mid to lower lung opacities are seen which could relate to atelectasis or infection or aspiration . The costophrenic angles are not well seen and pleural effusions can not be excluded . The cardiac silhouette remains enlarged . The mediastinal contour pulmonary edema .
    OUTPUT:
    
Severely suboptimal study due to underpenetration from patient body habitus . Stable cardiomediastinal silhouette . Right mid to lower lung opacity may in part relate to underpenetration but underlying infection , aspiration , atelectasis , or other causes of consolidation not excluded .