Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . There is a 6 cm , relatively lucent right cardiophrenic mass which is best seen on the PA view . The etiology of this mass is unclear , although it may represent a large fat pad , pericardial cyst , lipoma or fat - containing hernia . Due to a lack of prior imaging , a dedicated CT of the chest is recommended . There are large lung volumes with associated flattening of the diaphragm . There is also some attenuation of apical pulmonary vascular structures , consistent with emphysematous change . The bilateral costophrenic angles demonstrate some linear opacification which may represent scarring or atelectasis . The cardiomediastinal contours are within normal limits . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Right cardiophrenic mass of unclear etiology but may represent a large fat pad , lipoma , pericardial cyst , or Morgagni hernia . Without prior imaging , recommend CT of the chest to better evaluate this area . Hyperexpanded lungs , suggestive of COPD . No CXR evidence of interstitial lung disease , but CT ( if obtained ) would provide more detailed assessment of the interstitium .