Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Significant cardiomegaly is overall unchanged compared to prior exams dated back to ___ . There is mild pulmonary vascular congestion with mild pulmonary edema ; however , the hilar and mediastinal contours are otherwise unremarkable . There has been interval increase in a moderate right - sided pleural effusion compared to the prior exam from ___ . There is no evidence of pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Interval increase in a moderate right - sided pleural effusion . 2 . Mild pulmonary edema .