Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . There is increased opacity at the left posterior costophrenic angle , potentially due to atelectasis or small effusion . Mildly indistinct pulmonary vascular markings are seen , which could be due to combination of significant overlying soft tissues and mild pulmonary vascular congestion . Cardiac silhouette is enlarged , but unchanged . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Findings suggestive of mild pulmonary vascular congestion .