Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There are low lung volumes which exaggerate the prominence of the vascular structures as well as heart size . Given the low lung volumes , edema or consolidation can not be ruled out . Pacemaker leads are in stable position . There are aortic knob calcifications . There is no pleural effusion identified . There is no pneumothorax . PICC line ends in the upper SVC .
    OUTPUT:
    
Low lung volumes obscure the study and edema or pneumonia can not be entirely ruled out . The left lung is slightly obscured from overlying hardware .