Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hemidiaphragm is mildly elevated . No discrete focal consolidation is seen . There is no large pleural effusion . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Previously seen a pulmonary edema has improved in the interval with possible mild central pulmonary vascular engorgement . Degenerative changes are noted along the spine .
    OUTPUT:
    
Mildly elevated left hemidiaphragm and possible mild central pulmonary vascular engorgement without overt pulmonary edema . Persistent cardiomegaly .