Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low but improved compared to prior . Note is made of an accessory fissure ; elevated right hemidiaphragm persists . No focal consolidation or pneumothorax is detected on this view . Right pleural effusion has improved . Heart size is enlarged and unchanged . The aorta is calcified and tortuous . There has been interval removal of right PICC and left hemodialysis catheter . No pulmonary edema is detected . Right humeral replacement hardware is partially imaged .
    OUTPUT:
    
Cardiomegaly and low lung volumes . Improved aeration and dec 'd right pleural effusion compared to prior .