Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Indistinct pulmonary vascular markings seen with more focal opacities in the bilateral perihilar and medial right lower lobe , with more confluent opacity in the retrocardiac region sihouetting the descnding aorta . The costophrenic angles are not included . There is no large right effusion . Left pleural effusion could contribute to left basilar opacity . There is no evidence of a pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Pulmonary vascular congestion with perihilar and left greater than right basilar opacities raising possibility of superimposed infection . Recommend repeat after treatment to document resolution .